| 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.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.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.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.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.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.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.activation | Provides support for RMI Object Activation. | 
| 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.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.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.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.annotation.processing | Facilities for declaring annotation processors and for
 allowing annotation processors to communicate with an annotation processing
 tool environment. | 
| 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.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.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.ssl | Provides classes for the secure socket package. | 
| 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.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.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.sampled | Provides interfaces and classes for capture, processing, and playback of sampled audio data. | 
| 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.event | Provides for events fired by Swing components. | 
| 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.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.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.xml.bind | 
        Provides a runtime binding framework for client applications including
        unmarshalling, marshalling, and validation capabilities. | 
| 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.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.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.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.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.xpath | This package provides an object-model neutral API for the
evaluation of XPath expressions and access to the evaluation
environment. | 
| 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.xml.sax |  This package provides the core SAX APIs. | 
| org.xml.sax.helpers | This package contains "helper" classes, including
support for bootstrapping SAX-based applications. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Iterator An iterator over a collection. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| EmptyStackException Thrown by methods in the  Stackclass to indicate
 that the stack is empty. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| ResourceBundle Resource bundles contain locale-specific objects. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| ArrayList Resizable-array implementation of the List interface. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| TooManyListenersException 
 The   TooManyListenersException Exception is used as part of
 the Java Event model to annotate and implement a unicast special case of
 a multicast Event Source. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventListenerProxy An abstract wrapper class for an  EventListenerclass
 which associates a set of additional parameters with the listener. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Hashtable This class implements a hash table, which maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventListenerProxy An abstract wrapper class for an  EventListenerclass
 which associates a set of additional parameters with the listener. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| ArrayList Resizable-array implementation of the List interface. | 
| Collection The root interface in the collection hierarchy. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| HashMap Hash table based implementation of the Map interface. | 
| Iterator An iterator over a collection. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| TooManyListenersException 
 The   TooManyListenersException Exception is used as part of
 the Java Event model to annotate and implement a unicast special case of
 a multicast Event Source. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Spliterator An object for traversing and partitioning elements of a source. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Random An instance of this class is used to generate a stream of
 pseudorandom numbers. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Set A collection that contains no duplicate elements. | 
| SortedMap A  Mapthat further provides a total ordering on its keys. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Class and Description | 
|---|
| ConcurrentModificationException This exception may be thrown by methods that have detected concurrent
 modification of an object when such modification is not permissible. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Dictionary The  Dictionaryclass is the abstract parent of any
 class, such asHashtable, which maps keys to values. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Random An instance of this class is used to generate a stream of
 pseudorandom numbers. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Iterator An iterator over a collection. | 
| Map An object that maps keys to values. | 
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Class and Description | 
|---|
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Currency Represents a currency. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| TimeZone TimeZonerepresents a time zone offset, and also figures out daylight
 savings. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| NavigableMap A  SortedMapextended with navigation methods returning the
 closest matches for given search targets. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| AbstractCollection This class provides a skeletal implementation of the Collection
 interface, to minimize the effort required to implement this interface. | 
| AbstractList This class provides a skeletal implementation of the  Listinterface to minimize the effort required to implement this interface
 backed by a "random access" data store (such as an array). | 
| AbstractMap This class provides a skeletal implementation of the Map
 interface, to minimize the effort required to implement this interface. | 
| AbstractQueue This class provides skeletal implementations of some  Queueoperations. | 
| AbstractSequentialList This class provides a skeletal implementation of the List
 interface to minimize the effort required to implement this interface
 backed by a "sequential access" data store (such as a linked list). | 
| AbstractSet This class provides a skeletal implementation of the Set
 interface to minimize the effort required to implement this
 interface. | 
| ArrayDeque Resizable-array implementation of the  Dequeinterface. | 
| ArrayList Resizable-array implementation of the List interface. | 
| Base64.Decoder This class implements a decoder for decoding byte data using the
 Base64 encoding scheme as specified in RFC 4648 and RFC 2045. | 
| Base64.Encoder This class implements an encoder for encoding byte data using
 the Base64 encoding scheme as specified in RFC 4648 and RFC 2045. | 
| BitSet This class implements a vector of bits that grows as needed. | 
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| Calendar.Builder Calendar.Builderis used for creating aCalendarfrom
 various date-time parameters. | 
| Collection The root interface in the collection hierarchy. | 
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Currency Represents a currency. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Deque A linear collection that supports element insertion and removal at
 both ends. | 
| Dictionary The  Dictionaryclass is the abstract parent of any
 class, such asHashtable, which maps keys to values. | 
| DoubleSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and
 average. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EnumMap A specialized  Mapimplementation for use with enum type keys. | 
| EnumSet A specialized  Setimplementation for use with enum types. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Formatter An interpreter for printf-style format strings. | 
| Formatter.BigDecimalLayoutForm Enum for  BigDecimalformatting. | 
| GregorianCalendar GregorianCalendaris a concrete subclass ofCalendarand provides the standard calendar system
 used by most of the world. | 
| HashMap Hash table based implementation of the Map interface. | 
| HashSet This class implements the Set interface, backed by a hash table
 (actually a HashMap instance). | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| IllegalFormatException Unchecked exception thrown when a format string contains an illegal syntax
 or a format specifier that is incompatible with the given arguments. | 
| IntSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and
 average. | 
| InvalidPropertiesFormatException Thrown to indicate that an operation could not complete because
 the input did not conform to the appropriate XML document type
 for a collection of properties, as per the  Propertiesspecification. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| ListIterator An iterator for lists that allows the programmer
 to traverse the list in either direction, modify
 the list during iteration, and obtain the iterator's
 current position in the list. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Locale.Builder Builderis used to build instances ofLocalefrom values configured by the setters. | 
| Locale.Category Enum for locale categories. | 
| Locale.FilteringMode This enum provides constants to select a filtering mode for locale
 matching. | 
| Locale.LanguageRange This class expresses a Language Range defined in
 RFC 4647 Matching of
 Language Tags. | 
| LongSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and
 average. | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| MissingResourceException Signals that a resource is missing. | 
| NavigableMap A  SortedMapextended with navigation methods returning the
 closest matches for given search targets. | 
| NavigableSet A  SortedSetextended with navigation methods reporting
 closest matches for given search targets. | 
| NoSuchElementException Thrown by various accessor methods to indicate that the element being requested
 does not exist. | 
| Observable This class represents an observable object, or "data"
 in the model-view paradigm. | 
| Observer A class can implement the  Observerinterface when it
 wants to be informed of changes in observable objects. | 
| Optional A container object which may or may not contain a non-null value. | 
| OptionalDouble A container object which may or may not contain a  doublevalue. | 
| OptionalInt A container object which may or may not contain a  intvalue. | 
| OptionalLong A container object which may or may not contain a  longvalue. | 
| PrimitiveIterator A base type for primitive specializations of  Iterator. | 
| PrimitiveIterator.OfDouble An Iterator specialized for  doublevalues. | 
| PrimitiveIterator.OfInt An Iterator specialized for  intvalues. | 
| PrimitiveIterator.OfLong An Iterator specialized for  longvalues. | 
| PriorityQueue An unbounded priority queue based on a priority heap. | 
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Queue A collection designed for holding elements prior to processing. | 
| Random An instance of this class is used to generate a stream of
 pseudorandom numbers. | 
| RandomAccess Marker interface used by List implementations to indicate that
 they support fast (generally constant time) random access. | 
| ResourceBundle Resource bundles contain locale-specific objects. | 
| ResourceBundle.Control ResourceBundle.Controldefines a set of callback methods
 that are invoked by theResourceBundle.getBundlefactory
 methods during the bundle loading process. | 
| Scanner A simple text scanner which can parse primitive types and strings using
 regular expressions. | 
| ServiceLoader A simple service-provider loading facility. | 
| Set A collection that contains no duplicate elements. | 
| SortedMap A  Mapthat further provides a total ordering on its keys. | 
| SortedSet A  Setthat further provides a total ordering on its elements. | 
| Spliterator An object for traversing and partitioning elements of a source. | 
| Spliterator.OfDouble A Spliterator specialized for  doublevalues. | 
| Spliterator.OfInt A Spliterator specialized for  intvalues. | 
| Spliterator.OfLong A Spliterator specialized for  longvalues. | 
| Spliterator.OfPrimitive A Spliterator specialized for primitive values. | 
| SplittableRandom A generator of uniform pseudorandom values applicable for use in
 (among other contexts) isolated parallel computations that may
 generate subtasks. | 
| StringJoiner StringJoineris used to construct a sequence of characters separated
 by a delimiter and optionally starting with a supplied prefix
 and ending with a supplied suffix. | 
| TimerTask A task that can be scheduled for one-time or repeated execution by a Timer. | 
| TimeZone TimeZonerepresents a time zone offset, and also figures out daylight
 savings. | 
| UUID A class that represents an immutable universally unique identifier (UUID). | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| AbstractCollection This class provides a skeletal implementation of the Collection
 interface, to minimize the effort required to implement this interface. | 
| AbstractMap This class provides a skeletal implementation of the Map
 interface, to minimize the effort required to implement this interface. | 
| AbstractQueue This class provides skeletal implementations of some  Queueoperations. | 
| AbstractSet This class provides a skeletal implementation of the Set
 interface to minimize the effort required to implement this
 interface. | 
| Collection The root interface in the collection hierarchy. | 
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Deque A linear collection that supports element insertion and removal at
 both ends. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| ListIterator An iterator for lists that allows the programmer
 to traverse the list in either direction, modify
 the list during iteration, and obtain the iterator's
 current position in the list. | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| NavigableMap A  SortedMapextended with navigation methods returning the
 closest matches for given search targets. | 
| NavigableSet A  SortedSetextended with navigation methods reporting
 closest matches for given search targets. | 
| Queue A collection designed for holding elements prior to processing. | 
| Random An instance of this class is used to generate a stream of
 pseudorandom numbers. | 
| RandomAccess Marker interface used by List implementations to indicate that
 they support fast (generally constant time) random access. | 
| Set A collection that contains no duplicate elements. | 
| SortedMap A  Mapthat further provides a total ordering on its keys. | 
| SortedSet A  Setthat further provides a total ordering on its elements. | 
| Spliterator An object for traversing and partitioning elements of a source. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Class and Description | 
|---|
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| Set A collection that contains no duplicate elements. | 
| SortedMap A  Mapthat further provides a total ordering on its keys. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| List An ordered collection (also known as a sequence). | 
| ResourceBundle Resource bundles contain locale-specific objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| ResourceBundle.Control ResourceBundle.Controldefines a set of callback methods
 that are invoked by theResourceBundle.getBundlefactory
 methods during the bundle loading process. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| DoubleSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and
 average. | 
| IntSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and
 average. | 
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| LongSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and
 average. | 
| Map An object that maps keys to values. | 
| Optional A container object which may or may not contain a non-null value. | 
| OptionalDouble A container object which may or may not contain a  doublevalue. | 
| OptionalInt A container object which may or may not contain a  intvalue. | 
| OptionalLong A container object which may or may not contain a  longvalue. | 
| PrimitiveIterator.OfDouble An Iterator specialized for  doublevalues. | 
| PrimitiveIterator.OfInt An Iterator specialized for  intvalues. | 
| PrimitiveIterator.OfLong An Iterator specialized for  longvalues. | 
| Set A collection that contains no duplicate elements. | 
| Spliterator An object for traversing and partitioning elements of a source. | 
| Spliterator.OfDouble A Spliterator specialized for  doublevalues. | 
| Spliterator.OfInt A Spliterator specialized for  intvalues. | 
| Spliterator.OfLong A Spliterator specialized for  longvalues. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Class and Description | 
|---|
| ListResourceBundle ListResourceBundleis an abstract subclass ofResourceBundlethat manages resources for a locale
 in a convenient and easy to use list. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| ResourceBundle Resource bundles contain locale-specific objects. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| AbstractCollection This class provides a skeletal implementation of the Collection
 interface, to minimize the effort required to implement this interface. | 
| AbstractList This class provides a skeletal implementation of the  Listinterface to minimize the effort required to implement this interface
 backed by a "random access" data store (such as an array). | 
| ArrayList Resizable-array implementation of the List interface. | 
| Collection The root interface in the collection hierarchy. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| RandomAccess Marker interface used by List implementations to indicate that
 they support fast (generally constant time) random access. | 
| Set A collection that contains no duplicate elements. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| AbstractCollection This class provides a skeletal implementation of the Collection
 interface, to minimize the effort required to implement this interface. | 
| AbstractList This class provides a skeletal implementation of the  Listinterface to minimize the effort required to implement this interface
 backed by a "random access" data store (such as an array). | 
| ArrayList Resizable-array implementation of the List interface. | 
| Collection The root interface in the collection hierarchy. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| RandomAccess Marker interface used by List implementations to indicate that
 they support fast (generally constant time) random access. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Hashtable This class implements a hash table, which maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| Hashtable This class implements a hash table, which maps keys to values. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| AbstractCollection This class provides a skeletal implementation of the Collection
 interface, to minimize the effort required to implement this interface. | 
| AbstractMap This class provides a skeletal implementation of the Map
 interface, to minimize the effort required to implement this interface. | 
| AbstractSet This class provides a skeletal implementation of the Set
 interface to minimize the effort required to implement this
 interface. | 
| Collection The root interface in the collection hierarchy. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| HashMap Hash table based implementation of the Map interface. | 
| HashSet This class implements the Set interface, backed by a hash table
 (actually a HashMap instance). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| Collection The root interface in the collection hierarchy. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Map.Entry A map entry (key-value pair). | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| Collection The root interface in the collection hierarchy. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Class and Description | 
|---|
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| Dictionary The  Dictionaryclass is the abstract parent of any
 class, such asHashtable, which maps keys to values. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Class and Description | 
|---|
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Class and Description | 
|---|
| Comparator A comparison function, which imposes a total ordering on some
 collection of objects. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Dictionary The  Dictionaryclass is the abstract parent of any
 class, such asHashtable, which maps keys to values. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| BitSet This class implements a vector of bits that grows as needed. | 
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| EventListener A tagging interface that all event listener interfaces must extend. | 
| EventObject 
 The root class from which all event state objects shall be derived. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| EventListener A tagging interface that all event listener interfaces must extend. | 
| Hashtable This class implements a hash table, which maps keys to values. | 
| Vector The  Vectorclass implements a growable array of
 objects. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Calendar The  Calendarclass is an abstract class that provides methods
 for converting between a specific instant in time and a set ofcalendar fieldssuch asYEAR,MONTH,DAY_OF_MONTH,HOUR, and so on, and for
 manipulating the calendar fields, such as getting the date of the next
 week. | 
| Date The class  Daterepresents a specific instant
 in time, with millisecond precision. | 
| GregorianCalendar GregorianCalendaris a concrete subclass ofCalendarand provides the standard calendar system
 used by most of the world. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| TimeZone TimeZonerepresents a time zone offset, and also figures out daylight
 savings. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| Class and Description | 
|---|
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Class and Description | 
|---|
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| Iterator An iterator over a collection. | 
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Map An object that maps keys to values. | 
| Set A collection that contains no duplicate elements. | 
| Class and Description | 
|---|
| List An ordered collection (also known as a sequence). | 
| Class and Description | 
|---|
| Properties The  Propertiesclass represents a persistent set of
 properties. | 
| Class and Description | 
|---|
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
| Class and Description | 
|---|
| Enumeration An object that implements the Enumeration interface generates a
 series of elements, one at a time. | 
| Locale A  Localeobject represents a specific geographical, political,
 or cultural region. | 
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