| Package | Description | 
|---|---|
| java.applet | Provides the classes necessary to create an applet and the classes an applet
uses to communicate with its applet context. | 
| java.awt | Contains all of the classes for creating user
interfaces and for painting graphics and images. | 
| java.awt.color | Provides classes for color spaces. | 
| java.awt.datatransfer | Provides interfaces and classes for transferring data
between and within applications. | 
| java.awt.dnd | Drag and Drop is a direct manipulation gesture found in many Graphical
User Interface systems that provides a mechanism to transfer
information between two entities logically associated with presentation
elements in the GUI. | 
| java.awt.event | Provides interfaces and classes for dealing with different
types of events fired by AWT components. | 
| java.awt.font | Provides classes and interface relating to fonts. | 
| java.awt.geom | Provides the Java 2D classes for defining and performing operations
on objects related to two-dimensional geometry. | 
| java.awt.im | Provides classes and interfaces for the input method framework. | 
| java.awt.im.spi | Provides interfaces that enable the development of input methods
that can be used with any Java runtime environment. | 
| java.awt.image | Provides classes for creating and modifying images. | 
| java.awt.image.renderable | Provides classes and interfaces for producing
rendering-independent images. | 
| java.awt.print | Provides classes and interfaces for a general printing API. | 
| java.beans | Contains classes related to developing
beans -- components
based on the JavaBeans™ architecture. | 
| java.beans.beancontext | Provides classes and interfaces relating to bean context. | 
| java.io | Provides for system input and output through data streams,
serialization and the file system. | 
| java.lang | Provides classes that are fundamental to the design of the Java
 programming language. | 
| java.lang.annotation | Provides library support for the Java programming language
 annotation facility. | 
| java.lang.instrument | Provides services that allow Java programming language agents to instrument programs running on the JVM. | 
| java.lang.invoke | The  java.lang.invokepackage contains dynamic language support provided directly by
 the Java core class libraries and virtual machine. | 
| java.lang.management | Provides the management interfaces for monitoring and management of the
Java virtual machine and other components in the Java runtime. | 
| java.lang.ref | Provides reference-object classes, which support a limited degree of
interaction with the garbage collector. | 
| java.lang.reflect | Provides classes and interfaces for obtaining reflective
 information about classes and objects. | 
| java.math | Provides classes for performing arbitrary-precision integer
 arithmetic ( BigInteger) and arbitrary-precision decimal
 arithmetic (BigDecimal). | 
| java.net | Provides the classes for implementing networking applications. | 
| java.nio | Defines buffers, which are containers for data, and provides an overview of the
other NIO packages. | 
| java.nio.channels | Defines channels, which represent connections to entities that are capable of
 performing I/O operations, such as files and sockets; defines selectors, for
 multiplexed, non-blocking I/O operations. | 
| java.nio.channels.spi | Service-provider classes for the  java.nio.channelspackage. | 
| java.nio.charset | Defines charsets, decoders, and encoders, for translating between bytes and
Unicode characters. | 
| java.nio.charset.spi | Service-provider classes for the  java.nio.charsetpackage. | 
| java.nio.file | Defines interfaces and classes for the Java virtual machine to access files,
 file attributes, and file systems. | 
| java.nio.file.attribute | Interfaces and classes providing access to file and file system attributes. | 
| java.nio.file.spi | Service-provider classes for the  java.nio.filepackage. | 
| java.rmi | Provides the RMI package. | 
| java.rmi.activation | Provides support for RMI Object Activation. | 
| java.rmi.dgc | Provides classes and interface for RMI distributed
garbage-collection (DGC). | 
| java.rmi.registry | Provides a class and two interfaces for the RMI registry. | 
| java.rmi.server | Provides classes and interfaces for supporting the server
side of RMI. | 
| java.security | Provides the classes and interfaces for the security framework. | 
| java.security.acl | The classes and interfaces in this package have been
 superseded by classes in the java.security package. | 
| java.security.cert | Provides classes and interfaces for parsing and managing
 certificates, certificate revocation lists (CRLs), and
 certification paths. | 
| java.security.spec | Provides classes and interfaces for key specifications and algorithm
 parameter specifications. | 
| java.sql | Provides the API for accessing and processing data stored in a 
data source (usually a relational database) using the 
JavaTM programming language. | 
| java.text | Provides classes and interfaces for handling text, dates, numbers, and messages
in a manner independent of natural languages. | 
| java.text.spi | Service provider classes for the classes in the java.text package. | 
| java.time | 
 The main API for dates, times, instants, and durations. | 
| java.time.chrono | 
 Generic API for calendar systems other than the default ISO. | 
| java.time.format | 
 Provides classes to print and parse dates and times. | 
| java.time.temporal | 
 Access to date and time using fields and units, and date time adjusters. | 
| java.time.zone | 
 Support for time-zones and their rules. | 
| java.util | Contains the collections framework, legacy collection classes, event model,
date and time facilities, internationalization, and miscellaneous utility
classes (a string tokenizer, a random-number generator, and a bit array). | 
| java.util.concurrent | Utility classes commonly useful in concurrent programming. | 
| java.util.concurrent.atomic | A small toolkit of classes that support lock-free thread-safe
 programming on single variables. | 
| java.util.concurrent.locks | Interfaces and classes providing a framework for locking and waiting
 for conditions that is distinct from built-in synchronization and
 monitors. | 
| java.util.function | Functional interfaces provide target types for lambda expressions
 and method references. | 
| java.util.jar | Provides classes for reading and writing the JAR (Java ARchive) file
format, which is based on the standard ZIP file format with an
optional manifest file. | 
| java.util.logging | 
Provides the classes and interfaces of 
the JavaTM 2
 platform's core logging facilities. | 
| java.util.prefs | This package allows applications to store and retrieve user and system
preference and configuration data. | 
| java.util.regex | Classes for matching character sequences against patterns specified by regular
expressions. | 
| java.util.spi | Service provider classes for the classes in the java.util package. | 
| java.util.stream | Classes to support functional-style operations on streams of elements, such
 as map-reduce transformations on collections. | 
| java.util.zip | Provides classes for reading and writing the standard ZIP and GZIP
file formats. | 
| javax.accessibility | Defines a contract between user-interface components and an assistive technology
that provides access to those components. | 
| javax.activation | |
| javax.activity | Contains Activity service related exceptions thrown by the ORB machinery during
unmarshalling. | 
| javax.annotation | |
| javax.annotation.processing | Facilities for declaring annotation processors and for
 allowing annotation processors to communicate with an annotation processing
 tool environment. | 
| javax.crypto | Provides the classes and interfaces for cryptographic operations. | 
| javax.crypto.spec | Provides classes and interfaces for key specifications and algorithm
parameter specifications. | 
| javax.imageio | The main package of the Java Image I/O API. | 
| javax.imageio.event | A package of the Java Image I/O API dealing with synchronous
notification of events during the reading and writing of images. | 
| javax.imageio.metadata | A package of the Java Image I/O API dealing with reading and writing
metadata. | 
| javax.imageio.plugins.bmp | Package containing the public classes used by the built-in BMP plug-in. | 
| javax.imageio.plugins.jpeg | Classes supporting the built-in JPEG plug-in. | 
| javax.imageio.spi | A package of the Java Image I/O API containing the plug-in interfaces
for readers, writers, transcoders, and streams, and a runtime
registry. | 
| javax.imageio.stream | A package of the Java Image I/O API dealing with low-level I/O from
files and streams. | 
| javax.jws | |
| javax.jws.soap | |
| javax.lang.model | Classes and hierarchies of packages used to model the Java
 programming language. | 
| javax.lang.model.element | Interfaces used to model elements of the Java programming language. | 
| javax.lang.model.type | Interfaces used to model Java programming language types. | 
| javax.lang.model.util | Utilities to assist in the processing of
 program elements and
 types. | 
| javax.management | Provides the core classes for the Java Management Extensions. | 
| javax.management.loading | Provides the classes which implement advanced dynamic
        loading. | 
| javax.management.modelmbean | Provides the definition of the ModelMBean classes. | 
| javax.management.monitor | Provides the definition of the monitor classes. | 
| javax.management.openmbean | Provides the open data types and Open MBean descriptor classes. | 
| javax.management.relation | Provides the definition of the Relation Service. | 
| javax.management.remote | Interfaces for remote access to
        JMX MBean servers. | 
| javax.management.remote.rmi | The RMI connector is a connector for the JMX Remote API that
      uses RMI to transmit client requests to a remote MBean server. | 
| javax.management.timer | Provides the definition of the Timer MBean. | 
| javax.naming | Provides the classes and interfaces for accessing naming services. | 
| javax.naming.directory | Extends the javax.naming package to provide functionality
for accessing directory services. | 
| javax.naming.event | Provides support for event notification when accessing naming and
directory services. | 
| javax.naming.ldap | Provides support for LDAPv3 extended operations and controls. | 
| javax.naming.spi | |
| javax.net | Provides classes for networking applications. | 
| javax.net.ssl | Provides classes for the secure socket package. | 
| javax.print | Provides the principal classes and interfaces for the 
JavaTM Print Service API. | 
| javax.print.attribute | Provides classes and interfaces
that describe the types of JavaTM Print
Service attributes and how they can be collected into attribute sets. | 
| javax.print.attribute.standard | Package javax.print.attribute.standard
contains classes for specific printing attributes. | 
| javax.print.event | Package javax.print.event contains event classes  and listener interfaces. | 
| javax.rmi | Contains user APIs for RMI-IIOP. | 
| javax.rmi.CORBA | Contains portability APIs for RMI-IIOP. | 
| javax.rmi.ssl | Provides implementations of  RMIClientSocketFactoryandRMIServerSocketFactoryover 
the Secure Sockets Layer (SSL) or Transport Layer Security (TLS) protocols. | 
| javax.script | The scripting API consists of interfaces and classes that define
Java TM Scripting Engines and provides
a framework for their use in Java applications. | 
| javax.security.auth | This package provides a framework for authentication and
 authorization. | 
| javax.security.auth.callback | This package provides the classes necessary for services
 to interact with applications in order to retrieve
 information (authentication data including usernames
 or passwords, for example) or to display information
 (error and warning messages, for example). | 
| javax.security.auth.kerberos | This package contains utility classes related to the Kerberos network
 authentication protocol. | 
| javax.security.auth.login | This package provides a pluggable authentication framework. | 
| javax.security.auth.spi | This package provides the interface to be used for
 implementing pluggable authentication modules. | 
| javax.security.auth.x500 | This package contains the classes that should be used to store
 X500 Principal and X500 Private Credentials in a
 Subject. | 
| javax.security.cert | Provides classes for public key certificates. | 
| javax.security.sasl | Contains class and interfaces for supporting SASL. | 
| javax.sound.midi | Provides interfaces and classes for I/O, sequencing, and synthesis of MIDI 
(Musical Instrument Digital Interface) data. | 
| javax.sound.midi.spi | Supplies interfaces for service providers to implement when
offering new MIDI devices, MIDI file readers and writers, or sound bank readers. | 
| javax.sound.sampled | Provides interfaces and classes for capture, processing, and playback of sampled audio data. | 
| javax.sound.sampled.spi | Supplies abstract classes for service providers to subclass when
offering new audio devices, sound file readers and writers, or audio format converters. | 
| javax.sql | Provides the API for server side data source access and processing from
the JavaTM programming language. | 
| javax.sql.rowset | Standard interfaces and base classes for JDBC  RowSetimplementations. | 
| javax.sql.rowset.serial | Provides utility classes to allow serializable mappings between SQL types
and data types in the Java programming language. | 
| javax.sql.rowset.spi | The standard classes and interfaces that a third party vendor has to
use in its implementation of a synchronization provider. | 
| javax.swing | Provides a set of "lightweight"
(all-Java language) components that,
to the maximum degree possible, work the same on all platforms. | 
| javax.swing.border | Provides classes and interface for drawing
specialized borders around a Swing component. | 
| javax.swing.colorchooser | Contains classes and interfaces used by the  JColorChoosercomponent. | 
| javax.swing.event | Provides for events fired by Swing components. | 
| javax.swing.filechooser | Contains classes and interfaces used by the  JFileChoosercomponent. | 
| javax.swing.plaf | Provides one interface and many abstract classes that
Swing uses to provide its pluggable look-and-feel capabilities. | 
| javax.swing.plaf.basic | Provides user interface objects built according to the
Basic look and feel. | 
| javax.swing.plaf.metal | Provides user interface objects built according to
the Java look and feel (once codenamed Metal),
which is the default look and feel. | 
| javax.swing.plaf.multi | Provides user interface objects that combine two or more look and feels. | 
| javax.swing.plaf.nimbus | Provides user interface objects built according to the cross-platform
Nimbus look and feel. | 
| javax.swing.plaf.synth | 
      Synth is a skinnable look and feel in which all painting is
      delegated. | 
| javax.swing.table | Provides classes and interfaces for dealing with
 javax.swing.JTable. | 
| javax.swing.text | Provides classes and interfaces that deal with editable
and noneditable text components. | 
| javax.swing.text.html | Provides the class  HTMLEditorKitand supporting classes
for creating HTML text editors. | 
| javax.swing.text.html.parser | Provides the default HTML parser, along with support classes. | 
| javax.swing.text.rtf | Provides a class ( RTFEditorKit) for creating Rich-Text-Format
text editors. | 
| javax.swing.tree | Provides classes and interfaces for dealing with
 javax.swing.JTree. | 
| javax.swing.undo | Allows developers to provide support for undo/redo
in applications such as text editors. | 
| javax.tools | Provides interfaces for tools which can be invoked from a program,
 for example, compilers. | 
| javax.transaction | Contains three exceptions thrown by the ORB machinery during unmarshalling. | 
| javax.transaction.xa | Provides the API that defines the contract between the transaction 
manager and the resource manager, which allows the transaction 
manager to enlist and delist resource objects (supplied by the 
resource manager driver) in JTA transactions. | 
| javax.xml | |
| javax.xml.bind | 
        Provides a runtime binding framework for client applications including
        unmarshalling, marshalling, and validation capabilities. | 
| javax.xml.bind.annotation | 
        Defines annotations for customizing Java program elements to XML Schema mapping. | 
| javax.xml.bind.annotation.adapters | XmlAdapterand its spec-defined
        sub-classes to allow arbitrary Java classes to be used with JAXB. | 
| javax.xml.bind.attachment | 
        This package is implemented by a MIME-based package processor that 
        enables the interpretation and creation of optimized binary data 
        within an MIME-based package format. | 
| javax.xml.bind.helpers | 
        JAXB Provider Use Only: Provides partial default implementations for 
        some of the javax.xml.bind interfaces. | 
| javax.xml.bind.util | 
        Useful client utility classes. | 
| javax.xml.crypto | Common classes for XML cryptography. | 
| javax.xml.crypto.dom | DOM-specific classes for the  javax.xml.cryptopackage. | 
| javax.xml.crypto.dsig | Classes for generating and validating XML digital
signatures. | 
| javax.xml.crypto.dsig.dom | DOM-specific classes for the  javax.xml.crypto.dsigpackage. | 
| javax.xml.crypto.dsig.keyinfo | Classes for parsing and processing  KeyInfoelements and structures. | 
| javax.xml.crypto.dsig.spec | Parameter classes for XML digital signatures. | 
| javax.xml.datatype | XML/Java Type Mappings. | 
| javax.xml.namespace | XML Namespace processing. | 
| javax.xml.parsers | 
                Provides classes allowing the processing of XML documents. | 
| javax.xml.soap | Provides the API for creating and building SOAP messages. | 
| javax.xml.stream | |
| javax.xml.stream.events | |
| javax.xml.stream.util | |
| javax.xml.transform | This package defines the generic APIs for processing transformation
instructions, and performing a transformation from source to result. | 
| javax.xml.transform.dom | This package implements DOM-specific transformation APIs. | 
| javax.xml.transform.sax | This package implements SAX2-specific transformation APIs. | 
| javax.xml.transform.stax | 
                        Provides for StAX-specific transformation APIs. | 
| javax.xml.transform.stream | This package implements stream- and URI- specific transformation APIs. | 
| javax.xml.validation | 
                    This package provides an API for validation of XML documents. | 
| javax.xml.ws | This package contains the core JAX-WS APIs. | 
| javax.xml.ws.handler | This package defines APIs for message handlers. | 
| javax.xml.ws.handler.soap | This package defines APIs for SOAP message handlers. | 
| javax.xml.ws.http | This package defines APIs specific to the HTTP binding. | 
| javax.xml.ws.soap | This package defines APIs specific to the SOAP binding. | 
| javax.xml.ws.spi | This package defines SPIs for JAX-WS. | 
| javax.xml.ws.spi.http | Provides HTTP SPI that is used for portable deployment of JAX-WS
  web services in containers(for e.g. | 
| javax.xml.ws.wsaddressing | This package defines APIs related to WS-Addressing. | 
| javax.xml.xpath | This package provides an object-model neutral API for the
evaluation of XPath expressions and access to the evaluation
environment. | 
| org.ietf.jgss | This package presents a framework that allows application developers to
    make use of security services like authentication, data integrity and
    data confidentiality from a variety of underlying security mechanisms
    like Kerberos, using a unified API. | 
| org.omg.CORBA | Provides the mapping of the OMG CORBA APIs to the JavaTM
programming language, including the class ORB, which is implemented
so that a programmer can use it as a fully-functional Object Request Broker
(ORB). | 
| org.omg.CORBA.DynAnyPackage | Provides the exceptions used with the  DynAnyinterface 
(InvalidValue,Invalid,InvalidSeq, andTypeMismatch). | 
| org.omg.CORBA.ORBPackage | Provides the exception  InvalidName, which is thrown
by the methodORB.resolve_initial_referencesand the exceptionInconsistentTypeCode, which is thrown
by the Dynamic Any creation methods in the ORB class. | 
| org.omg.CORBA.TypeCodePackage | Provides the user-defined exceptions  BadKindandBounds, which are thrown by methods in
in the classTypeCode. | 
| org.omg.CORBA.portable | Provides a portability layer, that is, a set of ORB APIs
that makes it possible for code generated
by one vendor to run on another vendor's ORB. | 
| org.omg.CORBA_2_3.portable | Provides methods for the input and output of value types, and contains 
 other updates to the  org/omg/CORBA/portablepackage. | 
| org.omg.CosNaming | Provides a naming service for Java IDL. | 
| org.omg.CosNaming.NamingContextExtPackage | This package contains the following classes, which are used in 
org.omg.CosNaming.NamingContextExt: | 
| org.omg.CosNaming.NamingContextPackage | This package contains Exception classes for the org.omg.CosNaming
 package. | 
| org.omg.DynamicAny | Provides classes and interfaces that enable traversal of the data value
 associated with an  anyat
runtime, and extraction of the primitive constituents of the data value. | 
| org.omg.DynamicAny.DynAnyFactoryPackage | 
This package contains classes and exceptions from the DynAnyFactory
interface of the
DynamicAny module
specified in the OMG The Common Object Request Broker: Architecture and
Specification,
http://cgi.omg.org/cgi-bin/doc?formal/99-10-07, section 9.2.2. | 
| org.omg.DynamicAny.DynAnyPackage | This package contains classes and exceptions from the DynAny
 interface of the DynamicAny module
specified in the OMG The Common Object Request Broker: Architecture and
Specification,
http://cgi.omg.org/cgi-bin/doc?formal/99-10-07, section 9.2. | 
| org.omg.IOP | This package contains the IOP module specified in the OMG document
The Common
Object Request Broker: Architecture and Specification,
http://cgi.omg.org/cgi-bin/doc?formal/99-10-07, section 13.6. | 
| org.omg.IOP.CodecFactoryPackage | This package contains the exceptions
specified in the IOP::CodeFactory interface (as part of the Portable
 Interceptors spec). | 
| org.omg.IOP.CodecPackage | This package is generated from the IOP::Codec IDL interface
definition. | 
| org.omg.Messaging | This package contains the Messaging module specified in the OMG CORBA
Messaging specification, 
http://cgi.omg.org/cgi-bin/doc?formal/99-10-07. | 
| org.omg.PortableInterceptor | Provides a mechanism to register ORB hooks through which ORB services
can intercept the normal flow of execution of the ORB. | 
| org.omg.PortableInterceptor.ORBInitInfoPackage | This package contains the exceptions and typedefs from the ORBInitInfo
local interface of the PortableInterceptor module specified in the OMG
Portable Interceptor specification,
http://cgi.omg.org/cgi-bin/doc?ptc/2000-08-06, section 21.7.2. | 
| org.omg.PortableServer | Provides classes and interfaces for making the server side of your applications 
portable across multivendor ORBs. | 
| org.omg.PortableServer.CurrentPackage |  Provides method implementations with 
 access to the identity of the object on which the 
 method was invoked. | 
| org.omg.PortableServer.POAManagerPackage | 
Encapsulates the processing 
 state of the POAs it is associated with. | 
| org.omg.PortableServer.POAPackage | Allows programmers to construct object implementations that are portable
between different ORB products. | 
| org.omg.PortableServer.ServantLocatorPackage | Provides classes and interfaces for locating the servant. | 
| org.omg.stub.java.rmi | Contains RMI-IIOP Stubs for the Remote types that occur in the 
  java.rmi package. | 
| org.w3c.dom | Provides the interfaces for the Document Object Model (DOM). | 
| org.w3c.dom.bootstrap | |
| org.w3c.dom.events | |
| org.w3c.dom.ls | |
| org.xml.sax |  This package provides the core SAX APIs. | 
| org.xml.sax.ext | 
This package contains interfaces to SAX2 facilities that
conformant SAX drivers won't necessarily support. | 
| org.xml.sax.helpers | This package contains "helper" classes, including
support for bootstrapping SAX-based applications. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Character The  Characterclass wraps a value of the primitive
 typecharin an object. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| IndexOutOfBoundsException Thrown to indicate that an index of some sort (such as to an array, to a
 string, or to a vector) is out of range. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| NullPointerException Thrown when an application attempts to use  nullin a
 case where an object is required. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| NumberFormatException Thrown to indicate that the application has attempted to convert
 a string to one of the numeric types, but that the string does not
 have the appropriate format. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| UnsupportedOperationException Thrown to indicate that the requested operation is not supported. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Float The  Floatclass wraps a value of primitive typefloatin an object. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Character.Subset Instances of this class represent particular subsets of the Unicode
 character set. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| Character.Subset Instances of this class represent particular subsets of the Unicode
 character set. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IndexOutOfBoundsException Thrown to indicate that an index of some sort (such as to an array, to a
 string, or to a vector) is out of range. | 
| NullPointerException Thrown when an application attempts to use  nullin a
 case where an object is required. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Appendable An object to which char sequences and values can be appended. | 
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Readable A Readable is a source of characters. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| StringBuffer A thread-safe, mutable sequence of characters. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Appendable An object to which char sequences and values can be appended. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Byte The  Byteclass wraps a value of primitive typebytein an object. | 
| Character The  Characterclass wraps a value of the primitive
 typecharin an object. | 
| Character.Subset Instances of this class represent particular subsets of the Unicode
 character set. | 
| Character.UnicodeBlock A family of character subsets representing the character blocks in the
 Unicode specification. | 
| Character.UnicodeScript A family of character subsets representing the character scripts
 defined in the 
 Unicode Standard Annex #24: Script Names. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassFormatError Thrown when the Java Virtual Machine attempts to read a class
 file and determines that the file is malformed or otherwise cannot
 be interpreted as a class file. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Double The  Doubleclass wraps a value of the primitive typedoublein an object. | 
| Enum This is the common base class of all Java language enumeration types. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Float The  Floatclass wraps a value of primitive typefloatin an object. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IncompatibleClassChangeError Thrown when an incompatible class change has occurred to some class
 definition. | 
| IndexOutOfBoundsException Thrown to indicate that an index of some sort (such as to an array, to a
 string, or to a vector) is out of range. | 
| InstantiationException Thrown when an application tries to create an instance of a class
 using the  newInstancemethod in classClass, but the specified class object cannot be
 instantiated. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| LinkageError Subclasses of  LinkageErrorindicate that a class has
 some dependency on another class; however, the latter class has
 incompatibly changed after the compilation of the former class. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| NoSuchFieldException Signals that the class doesn't have a field of a specified name. | 
| NoSuchMethodException Thrown when a particular method cannot be found. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| NumberFormatException Thrown to indicate that the application has attempted to convert
 a string to one of the numeric types, but that the string does not
 have the appropriate format. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Package Packageobjects contain version information
 about the implementation and specification of a Java package. | 
| Process The  ProcessBuilder.start()andRuntime.execmethods create a native process and return an instance of a
 subclass ofProcessthat can be used to control the process
 and obtain information about it. | 
| ProcessBuilder This class is used to create operating system processes. | 
| ProcessBuilder.Redirect Represents a source of subprocess input or a destination of
 subprocess output. | 
| ProcessBuilder.Redirect.Type The type of a  ProcessBuilder.Redirect. | 
| ReflectiveOperationException Common superclass of exceptions thrown by reflective operations in
 core reflection. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| Runtime Every Java application has a single instance of class
  Runtimethat allows the application to interface with
 the environment in which the application is running. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| SecurityManager The security manager is a class that allows
 applications to implement a security policy. | 
| Short The  Shortclass wraps a value of primitive typeshortin an object. | 
| StackTraceElement An element in a stack trace, as returned by  Throwable.getStackTrace(). | 
| String The  Stringclass represents character strings. | 
| StringBuffer A thread-safe, mutable sequence of characters. | 
| StringBuilder A mutable sequence of characters. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Thread A thread is a thread of execution in a program. | 
| Thread.State A thread state. | 
| Thread.UncaughtExceptionHandler Interface for handlers invoked when a Thread abruptly
 terminates due to an uncaught exception. | 
| ThreadGroup A thread group represents a set of threads. | 
| ThreadLocal This class provides thread-local variables. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| VirtualMachineError Thrown to indicate that the Java Virtual Machine is broken or has
 run out of resources necessary for it to continue operating. | 
| Void The  Voidclass is an uninstantiable placeholder class to hold a
 reference to theClassobject representing the Java keyword
 void. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| NoSuchFieldException Signals that the class doesn't have a field of a specified name. | 
| NoSuchMethodException Thrown when a particular method cannot be found. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| TypeNotPresentException Thrown when an application tries to access a type using a string
 representing the type's name, but no definition for the type with
 the specified name can be found. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| StackTraceElement An element in a stack trace, as returned by  Throwable.getStackTrace(). | 
| String The  Stringclass represents character strings. | 
| Thread.State A thread state. | 
| Class and Description | 
|---|
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Class and Description | 
|---|
| ArrayIndexOutOfBoundsException Thrown to indicate that an array has been accessed with an
 illegal index. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassFormatError Thrown when the Java Virtual Machine attempts to read a class
 file and determines that the file is malformed or otherwise cannot
 be interpreted as a class file. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| InstantiationException Thrown when an application tries to create an instance of a class
 using the  newInstancemethod in classClass, but the specified class object cannot be
 instantiated. | 
| LinkageError Subclasses of  LinkageErrorindicate that a class has
 some dependency on another class; however, the latter class has
 incompatibly changed after the compilation of the former class. | 
| NegativeArraySizeException Thrown if an application tries to create an array with negative size. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| ReflectiveOperationException Common superclass of exceptions thrown by reflective operations in
 core reflection. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Package Packageobjects contain version information
 about the implementation and specification of a Java package. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Appendable An object to which char sequences and values can be appended. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Readable A Readable is a source of characters. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| UnsupportedOperationException Thrown to indicate that the requested operation is not supported. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Void The  Voidclass is an uninstantiable placeholder class to hold a
 reference to theClassobject representing the Java keyword
 void. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| UnsupportedOperationException Thrown to indicate that the requested operation is not supported. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| SecurityManager The security manager is a class that allows
 applications to implement a security policy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Appendable An object to which char sequences and values can be appended. | 
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| StringBuffer A thread-safe, mutable sequence of characters. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Appendable An object to which char sequences and values can be appended. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Appendable An object to which char sequences and values can be appended. | 
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Character The  Characterclass wraps a value of the primitive
 typecharin an object. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Double The  Doubleclass wraps a value of the primitive typedoublein an object. | 
| Enum This is the common base class of all Java language enumeration types. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| InstantiationException Thrown when an application tries to create an instance of a class
 using the  newInstancemethod in classClass, but the specified class object cannot be
 instantiated. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Readable A Readable is a source of characters. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| SafeVarargs A programmer assertion that the body of the annotated method or
 constructor does not perform potentially unsafe operations on its
 varargs parameter. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Thread A thread is a thread of execution in a program. | 
| Thread.UncaughtExceptionHandler Interface for handlers invoked when a Thread abruptly
 terminates due to an uncaught exception. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Void The  Voidclass is an uninstantiable placeholder class to hold a
 reference to theClassobject representing the Java keyword
 void. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Thread A thread is a thread of execution in a program. | 
| Class and Description | 
|---|
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| FunctionalInterface An informative annotation type used to indicate that an interface
 type declaration is intended to be a functional interface as
 defined by the Java Language Specification. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| StringBuffer A thread-safe, mutable sequence of characters. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Double The  Doubleclass wraps a value of the primitive typedoublein an object. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| SafeVarargs A programmer assertion that the body of the annotated method or
 constructor does not perform potentially unsafe operations on its
 varargs parameter. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| InternalError Thrown to indicate some unexpected internal error has occurred in
 the Java Virtual Machine. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| VirtualMachineError Thrown to indicate that the Java Virtual Machine is broken or has
 run out of resources necessary for it to continue operating. | 
| Class and Description | 
|---|
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| UnsupportedOperationException Thrown to indicate that the requested operation is not supported. | 
| Class and Description | 
|---|
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| NullPointerException Thrown when an application attempts to use  nullin a
 case where an object is required. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| UnsupportedOperationException Thrown to indicate that the requested operation is not supported. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Byte The  Byteclass wraps a value of primitive typebytein an object. | 
| Character The  Characterclass wraps a value of the primitive
 typecharin an object. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Double The  Doubleclass wraps a value of the primitive typedoublein an object. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Float The  Floatclass wraps a value of primitive typefloatin an object. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| Short The  Shortclass wraps a value of primitive typeshortin an object. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Void The  Voidclass is an uninstantiable placeholder class to hold a
 reference to theClassobject representing the Java keyword
 void. | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IndexOutOfBoundsException Thrown to indicate that an index of some sort (such as to an array, to a
 string, or to a vector) is out of range. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| NoSuchMethodException Thrown when a particular method cannot be found. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Long The  Longclass wraps a value of the primitive typelongin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassCastException Thrown to indicate that the code has attempted to cast an object
 to a subclass of which it is not an instance. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassCastException Thrown to indicate that the code has attempted to cast an object
 to a subclass of which it is not an instance. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| NoSuchMethodException Thrown when a particular method cannot be found. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| ArrayIndexOutOfBoundsException Thrown to indicate that an array has been accessed with an
 illegal index. | 
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Character The  Characterclass wraps a value of the primitive
 typecharin an object. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| InstantiationException Thrown when an application tries to create an instance of a class
 using the  newInstancemethod in classClass, but the specified class object cannot be
 instantiated. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied,
 and the thread is interrupted, either before or during the activity. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| SafeVarargs A programmer assertion that the body of the annotated method or
 constructor does not perform potentially unsafe operations on its
 varargs parameter. | 
| SecurityException Thrown by the security manager to indicate a security violation. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Integer The  Integerclass wraps a value of the primitive typeintin an object. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| Runnable The  Runnableinterface should be implemented by any
 class whose instances are intended to be executed by a thread. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Thread A thread is a thread of execution in a program. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| StringBuffer A thread-safe, mutable sequence of characters. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| CloneNotSupportedException Thrown to indicate that the  clonemethod in classObjecthas been called to clone an object, but that
 the object's class does not implement theCloneableinterface. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| AutoCloseable An object that may hold resources (such as file or socket handles)
 until it is closed. | 
| Boolean The Boolean class wraps a value of the primitive type
  booleanin an object. | 
| CharSequence A CharSequence is a readable sequence of  charvalues. | 
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Iterable Implementing this interface allows an object to be the target of
 the "for-each loop" statement. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalStateException Signals that a method has been invoked at an illegal or
 inappropriate time. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| SuppressWarnings Indicates that the named compiler warnings should be suppressed in the
 annotated element (and in all program elements contained in the annotated
 element). | 
| Class and Description | 
|---|
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Number The abstract class  Numberis the superclass of platform
 classes representing numeric values that are convertible to the
 primitive typesbyte,double,float,int,long, andshort. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| UnsupportedOperationException Thrown to indicate that the requested operation is not supported. | 
| Class and Description | 
|---|
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| Override Indicates that a method declaration is intended to override a
 method declaration in a supertype. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Error An  Erroris a subclass ofThrowablethat indicates serious problems that a reasonable application
 should not try to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Comparable This interface imposes a total ordering on the objects of each class that
 implements it. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| IllegalArgumentException Thrown to indicate that a method has been passed an illegal or
 inappropriate argument. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| ClassLoader A class loader is an object that is responsible for loading classes. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Cloneable A class implements the  Cloneableinterface to
 indicate to theObject.clone()method that it
 is legal for that method to make a
 field-for-field copy of instances of that class. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Deprecated A program element annotated @Deprecated is one that programmers
 are discouraged from using, typically because it is dangerous,
 or because a better alternative exists. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Class Instances of the class  Classrepresent classes and
 interfaces in a running Java application. | 
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| ClassCastException Thrown to indicate that the code has attempted to cast an object
 to a subclass of which it is not an instance. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| InstantiationException Thrown when an application tries to create an instance of a class
 using the  newInstancemethod in classClass, but the specified class object cannot be
 instantiated. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| RuntimeException RuntimeExceptionis the superclass of those
 exceptions that can be thrown during the normal operation of the
 Java Virtual Machine. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Exception The class  Exceptionand its subclasses are a form ofThrowablethat indicates conditions that a reasonable
 application might want to catch. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Throwable The  Throwableclass is the superclass of all errors and
 exceptions in the Java language. | 
| Class and Description | 
|---|
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
| Class and Description | 
|---|
| ClassCastException Thrown to indicate that the code has attempted to cast an object
 to a subclass of which it is not an instance. | 
| ClassNotFoundException Thrown when an application tries to load in a class through its
 string name using:
 
 The  forNamemethod in classClass. | 
| IllegalAccessException An IllegalAccessException is thrown when an application tries
 to reflectively create an instance (other than an array),
 set or get a field, or invoke a method, but the currently
 executing method does not have access to the definition of
 the specified class, field, method or constructor. | 
| InstantiationException Thrown when an application tries to create an instance of a class
 using the  newInstancemethod in classClass, but the specified class object cannot be
 instantiated. | 
| NullPointerException Thrown when an application attempts to use  nullin a
 case where an object is required. | 
| Object Class  Objectis the root of the class hierarchy. | 
| String The  Stringclass represents character strings. | 
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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