T - the type of the class modeled by this Class
 object.  For example, the type of String.class is Class<String>.  Use Class<?> if the class being modeled is
 unknown.public final class Class<T> extends Object implements Serializable, GenericDeclaration, Type, AnnotatedElement
Class represent classes and
 interfaces in a running Java application.  An enum is a kind of
 class and an annotation is a kind of interface.  Every array also
 belongs to a class that is reflected as a Class object
 that is shared by all arrays with the same element type and number
 of dimensions.  The primitive Java types (boolean,
 byte, char, short,
 int, long, float, and
 double), and the keyword void are also
 represented as Class objects.
  Class has no public constructor. Instead Class
 objects are constructed automatically by the Java Virtual Machine as classes
 are loaded and by calls to the defineClass method in the class
 loader.
 
 The following example uses a Class object to print the
 class name of an object:
 
     void printClassName(Object obj) {
         System.out.println("The class of " + obj +
                            " is " + obj.getClass().getName());
     }
  It is also possible to get the Class object for a named
 type (or for void) using a class literal.  See Section 15.8.2 of
 The Java™ Language Specification.
 For example:
 
     System.out.println("The name of class Foo is: "+Foo.class.getName());
 ClassLoader.defineClass(byte[], int, int), 
Serialized Form| Modifier and Type | Method and Description | 
|---|---|
| <U> Class<? extends U> | asSubclass(Class<U> clazz)Casts this  Classobject to represent a subclass of the class
 represented by the specified class object. | 
| T | cast(Object obj)Casts an object to the class or interface represented
 by this  Classobject. | 
| boolean | desiredAssertionStatus()Returns the assertion status that would be assigned to this
 class if it were to be initialized at the time this method is invoked. | 
| static Class<?> | forName(String className)Returns the  Classobject associated with the class or
 interface with the given string name. | 
| static Class<?> | forName(String name,
       boolean initialize,
       ClassLoader loader)Returns the  Classobject associated with the class or
 interface with the given string name, using the given class loader. | 
| AnnotatedType[] | getAnnotatedInterfaces()Returns an array of  AnnotatedTypeobjects that represent the use
 of types to specify superinterfaces of the entity represented by thisClassobject. | 
| AnnotatedType | getAnnotatedSuperclass()Returns an  AnnotatedTypeobject that represents the use of a
 type to specify the superclass of the entity represented by thisClassobject. | 
| <A extends Annotation> | getAnnotation(Class<A> annotationClass)Returns this element's annotation for the specified type if
 such an annotation is present, else null. | 
| Annotation[] | getAnnotations()Returns annotations that are present on this element. | 
| <A extends Annotation> | getAnnotationsByType(Class<A> annotationClass)Returns annotations that are associated with this element. | 
| String | getCanonicalName()Returns the canonical name of the underlying class as
 defined by the Java Language Specification. | 
| Class<?>[] | getClasses()Returns an array containing  Classobjects representing all
 the public classes and interfaces that are members of the class
 represented by thisClassobject. | 
| ClassLoader | getClassLoader()Returns the class loader for the class. | 
| Class<?> | getComponentType()Returns the  Classrepresenting the component type of an
 array. | 
| Constructor<T> | getConstructor(Class<?>... parameterTypes)Returns a  Constructorobject that reflects the specified
 public constructor of the class represented by thisClassobject. | 
| Constructor<?>[] | getConstructors()Returns an array containing  Constructorobjects reflecting
 all the public constructors of the class represented by thisClassobject. | 
| <A extends Annotation> | getDeclaredAnnotation(Class<A> annotationClass)Returns this element's annotation for the specified type if
 such an annotation is directly present, else null. | 
| Annotation[] | getDeclaredAnnotations()Returns annotations that are directly present on this element. | 
| <A extends Annotation> | getDeclaredAnnotationsByType(Class<A> annotationClass)Returns this element's annotation(s) for the specified type if
 such annotations are either directly present or
 indirectly present. | 
| Class<?>[] | getDeclaredClasses()Returns an array of  Classobjects reflecting all the
 classes and interfaces declared as members of the class represented by
 thisClassobject. | 
| Constructor<T> | getDeclaredConstructor(Class<?>... parameterTypes)Returns a  Constructorobject that reflects the specified
 constructor of the class or interface represented by thisClassobject. | 
| Constructor<?>[] | getDeclaredConstructors()Returns an array of  Constructorobjects reflecting all the
 constructors declared by the class represented by thisClassobject. | 
| Field | getDeclaredField(String name)Returns a  Fieldobject that reflects the specified declared
 field of the class or interface represented by thisClassobject. | 
| Field[] | getDeclaredFields()Returns an array of  Fieldobjects reflecting all the fields
 declared by the class or interface represented by thisClassobject. | 
| Method | getDeclaredMethod(String name,
                 Class<?>... parameterTypes)Returns a  Methodobject that reflects the specified
 declared method of the class or interface represented by thisClassobject. | 
| Method[] | getDeclaredMethods()Returns an array containing  Methodobjects reflecting all the
 declared methods of the class or interface represented by thisClassobject, including public, protected, default (package)
 access, and private methods, but excluding inherited methods. | 
| Class<?> | getDeclaringClass()If the class or interface represented by this  Classobject
 is a member of another class, returns theClassobject
 representing the class in which it was declared. | 
| Class<?> | getEnclosingClass()Returns the immediately enclosing class of the underlying
 class. | 
| Constructor<?> | getEnclosingConstructor()If this  Classobject represents a local or anonymous
 class within a constructor, returns aConstructorobject representing
 the immediately enclosing constructor of the underlying
 class. | 
| Method | getEnclosingMethod()If this  Classobject represents a local or anonymous
 class within a method, returns aMethodobject representing the
 immediately enclosing method of the underlying class. | 
| T[] | getEnumConstants()Returns the elements of this enum class or null if this
 Class object does not represent an enum type. | 
| Field | getField(String name)Returns a  Fieldobject that reflects the specified public member
 field of the class or interface represented by thisClassobject. | 
| Field[] | getFields()Returns an array containing  Fieldobjects reflecting all
 the accessible public fields of the class or interface represented by
 thisClassobject. | 
| Type[] | getGenericInterfaces()Returns the  Types representing the interfaces
 directly implemented by the class or interface represented by
 this object. | 
| Type | getGenericSuperclass()Returns the  Typerepresenting the direct superclass of
 the entity (class, interface, primitive type or void) represented by
 thisClass. | 
| Class<?>[] | getInterfaces()Determines the interfaces implemented by the class or interface
 represented by this object. | 
| Method | getMethod(String name,
         Class<?>... parameterTypes)Returns a  Methodobject that reflects the specified public
 member method of the class or interface represented by thisClassobject. | 
| Method[] | getMethods()Returns an array containing  Methodobjects reflecting all the
 public methods of the class or interface represented by thisClassobject, including those declared by the class or interface and
 those inherited from superclasses and superinterfaces. | 
| int | getModifiers()Returns the Java language modifiers for this class or interface, encoded
 in an integer. | 
| String | getName()Returns the  name of the entity (class, interface, array class,
 primitive type, or void) represented by this  Classobject,
 as aString. | 
| Package | getPackage()Gets the package for this class. | 
| ProtectionDomain | getProtectionDomain()Returns the  ProtectionDomainof this class. | 
| URL | getResource(String name)Finds a resource with a given name. | 
| InputStream | getResourceAsStream(String name)Finds a resource with a given name. | 
| Object[] | getSigners()Gets the signers of this class. | 
| String | getSimpleName()Returns the simple name of the underlying class as given in the
 source code. | 
| Class<? super T> | getSuperclass()Returns the  Classrepresenting the superclass of the entity
 (class, interface, primitive type or void) represented by thisClass. | 
| String | getTypeName()Return an informative string for the name of this type. | 
| TypeVariable<Class<T>>[] | getTypeParameters()Returns an array of  TypeVariableobjects that represent the
 type variables declared by the generic declaration represented by thisGenericDeclarationobject, in declaration order. | 
| boolean | isAnnotation()Returns true if this  Classobject represents an annotation
 type. | 
| boolean | isAnnotationPresent(Class<? extends Annotation> annotationClass)Returns true if an annotation for the specified type
 is present on this element, else false. | 
| boolean | isAnonymousClass()Returns  trueif and only if the underlying class
 is an anonymous class. | 
| boolean | isArray()Determines if this  Classobject represents an array class. | 
| boolean | isAssignableFrom(Class<?> cls)Determines if the class or interface represented by this
  Classobject is either the same as, or is a superclass or
 superinterface of, the class or interface represented by the specifiedClassparameter. | 
| boolean | isEnum()Returns true if and only if this class was declared as an enum in the
 source code. | 
| boolean | isInstance(Object obj)Determines if the specified  Objectis assignment-compatible
 with the object represented by thisClass. | 
| boolean | isInterface()Determines if the specified  Classobject represents an
 interface type. | 
| boolean | isLocalClass()Returns  trueif and only if the underlying class
 is a local class. | 
| boolean | isMemberClass()Returns  trueif and only if the underlying class
 is a member class. | 
| boolean | isPrimitive()Determines if the specified  Classobject represents a
 primitive type. | 
| boolean | isSynthetic()Returns  trueif this class is a synthetic class;
 returnsfalseotherwise. | 
| T | newInstance()Creates a new instance of the class represented by this  Classobject. | 
| String | toGenericString()Returns a string describing this  Class, including
 information about modifiers and type parameters. | 
| String | toString()Converts the object to a string. | 
public String toString()
getName.  If this Class object represents a
 primitive type, this method returns the name of the primitive type.  If
 this Class object represents void this method returns
 "void".public String toGenericString()
Class, including
 information about modifiers and type parameters.
 The string is formatted as a list of type modifiers, if any,
 followed by the kind of type (empty string for primitive types
 and class, enum, interface, or
 @interface, as appropriate), followed
 by the type's name, followed by an angle-bracketed
 comma-separated list of the type's type parameters, if any.
 A space is used to separate modifiers from one another and to
 separate any modifiers from the kind of type. The modifiers
 occur in canonical order. If there are no type parameters, the
 type parameter list is elided.
 Note that since information about the runtime representation of a type is being generated, modifiers not present on the originating source code or illegal on the originating source code may be present.
Class, including
 information about modifiers and type parameterspublic static Class<?> forName(String className) throws ClassNotFoundException
Class object associated with the class or
 interface with the given string name.  Invoking this method is
 equivalent to:
 
  Class.forName(className, true, currentLoader)
 
 where currentLoader denotes the defining class loader of
 the current class.
  For example, the following code fragment returns the
 runtime Class descriptor for the class named
 java.lang.Thread:
 
   Class t = Class.forName("java.lang.Thread")
 
 
 A call to forName("X") causes the class named
 X to be initialized.
className - the fully qualified name of the desired class.Class object for the class with the
             specified name.LinkageError - if the linkage failsExceptionInInitializerError - if the initialization provoked
            by this method failsClassNotFoundException - if the class cannot be locatedpublic static Class<?> forName(String name, boolean initialize, ClassLoader loader) throws ClassNotFoundException
Class object associated with the class or
 interface with the given string name, using the given class loader.
 Given the fully qualified name for a class or interface (in the same
 format returned by getName) this method attempts to
 locate, load, and link the class or interface.  The specified class
 loader is used to load the class or interface.  If the parameter
 loader is null, the class is loaded through the bootstrap
 class loader.  The class is initialized only if the
 initialize parameter is true and if it has
 not been initialized earlier.
  If name denotes a primitive type or void, an attempt
 will be made to locate a user-defined class in the unnamed package whose
 name is name. Therefore, this method cannot be used to
 obtain any of the Class objects representing primitive
 types or void.
 
 If name denotes an array class, the component type of
 the array class is loaded but not initialized.
 
For example, in an instance method the expression:
  Class.forName("Foo")
 
 is equivalent to:
 
  Class.forName("Foo", true, this.getClass().getClassLoader())
 
 Note that this method throws errors related to loading, linking or
 initializing as specified in Sections 12.2, 12.3 and 12.4 of The
 Java Language Specification.
 Note that this method does not check whether the requested class
 is accessible to its caller.
  If the loader is null, and a security
 manager is present, and the caller's class loader is not null, then this
 method calls the security manager's checkPermission method
 with a RuntimePermission("getClassLoader") permission to
 ensure it's ok to access the bootstrap class loader.
name - fully qualified name of the desired classinitialize - if true the class will be initialized.
                   See Section 12.4 of The Java Language Specification.loader - class loader from which the class must be loadedLinkageError - if the linkage failsExceptionInInitializerError - if the initialization provoked
            by this method failsClassNotFoundException - if the class cannot be located by
            the specified class loaderforName(String), 
ClassLoaderpublic T newInstance() throws InstantiationException, IllegalAccessException
Class
 object.  The class is instantiated as if by a new
 expression with an empty argument list.  The class is initialized if it
 has not already been initialized.
 Note that this method propagates any exception thrown by the
 nullary constructor, including a checked exception.  Use of
 this method effectively bypasses the compile-time exception
 checking that would otherwise be performed by the compiler.
 The Constructor.newInstance method avoids this problem by wrapping
 any exception thrown by the constructor in a (checked) InvocationTargetException.
IllegalAccessException - if the class or its nullary
          constructor is not accessible.InstantiationException - if this Class represents an abstract class,
          an interface, an array class, a primitive type, or void;
          or if the class has no nullary constructor;
          or if the instantiation fails for some other reason.ExceptionInInitializerError - if the initialization
          provoked by this method fails.SecurityException - If a security manager, s, is present and
          the caller's class loader is not the same as or an
          ancestor of the class loader for the current class and
          invocation of s.checkPackageAccess() denies access to the package
          of this class.public boolean isInstance(Object obj)
Object is assignment-compatible
 with the object represented by this Class.  This method is
 the dynamic equivalent of the Java language instanceof
 operator. The method returns true if the specified
 Object argument is non-null and can be cast to the
 reference type represented by this Class object without
 raising a ClassCastException. It returns false
 otherwise.
  Specifically, if this Class object represents a
 declared class, this method returns true if the specified
 Object argument is an instance of the represented class (or
 of any of its subclasses); it returns false otherwise. If
 this Class object represents an array class, this method
 returns true if the specified Object argument
 can be converted to an object of the array class by an identity
 conversion or by a widening reference conversion; it returns
 false otherwise. If this Class object
 represents an interface, this method returns true if the
 class or any superclass of the specified Object argument
 implements this interface; it returns false otherwise. If
 this Class object represents a primitive type, this method
 returns false.
obj - the object to checkobj is an instance of this classpublic boolean isAssignableFrom(Class<?> cls)
Class object is either the same as, or is a superclass or
 superinterface of, the class or interface represented by the specified
 Class parameter. It returns true if so;
 otherwise it returns false. If this Class
 object represents a primitive type, this method returns
 true if the specified Class parameter is
 exactly this Class object; otherwise it returns
 false.
  Specifically, this method tests whether the type represented by the
 specified Class parameter can be converted to the type
 represented by this Class object via an identity conversion
 or via a widening reference conversion. See The Java Language
 Specification, sections 5.1.1 and 5.1.4 , for details.
cls - the Class object to be checkedboolean value indicating whether objects of the
 type cls can be assigned to objects of this classNullPointerException - if the specified Class parameter is
            null.public boolean isInterface()
Class object represents an
 interface type.true if this object represents an interface;
          false otherwise.public boolean isArray()
Class object represents an array class.true if this object represents an array class;
          false otherwise.public boolean isPrimitive()
Class object represents a
 primitive type.
  There are nine predefined Class objects to represent
 the eight primitive types and void.  These are created by the Java
 Virtual Machine, and have the same names as the primitive types that
 they represent, namely boolean, byte,
 char, short, int,
 long, float, and double.
 
 These objects may only be accessed via the following public static
 final variables, and are the only Class objects for which
 this method returns true.
Boolean.TYPE, 
Character.TYPE, 
Byte.TYPE, 
Short.TYPE, 
Integer.TYPE, 
Long.TYPE, 
Float.TYPE, 
Double.TYPE, 
Void.TYPEpublic boolean isAnnotation()
Class object represents an annotation
 type.  Note that if this method returns true, isInterface()
 would also return true, as all annotation types are also interfaces.true if this class object represents an annotation
      type; false otherwisepublic boolean isSynthetic()
true if this class is a synthetic class;
 returns false otherwise.true if and only if this class is a synthetic class as
         defined by the Java Language Specification.public String getName()
Class object,
 as a String.
 If this class object represents a reference type that is not an array type then the binary name of the class is returned, as specified by The Java™ Language Specification.
 If this class object represents a primitive type or void, then the
 name returned is a String equal to the Java language
 keyword corresponding to the primitive type or void.
 
 If this class object represents a class of arrays, then the internal
 form of the name consists of the name of the element type preceded by
 one or more '[' characters representing the depth of the array
 nesting.  The encoding of element type names is as follows:
 
Element Type Encoding boolean Z byte B char C class or interface Lclassname; double D float F int I long J short S 
The class or interface name classname is the binary name of the class specified above.
Examples:
 String.class.getName()
     returns "java.lang.String"
 byte.class.getName()
     returns "byte"
 (new Object[3]).getClass().getName()
     returns "[Ljava.lang.Object;"
 (new int[3][4][5][6][7][8][9]).getClass().getName()
     returns "[[[[[[[I"
 public ClassLoader getClassLoader()
 If a security manager is present, and the caller's class loader is
 not null and the caller's class loader is not the same as or an ancestor of
 the class loader for the class whose class loader is requested, then
 this method calls the security manager's checkPermission
 method with a RuntimePermission("getClassLoader")
 permission to ensure it's ok to access the class loader for the class.
 
If this object represents a primitive type or void, null is returned.
SecurityException - if a security manager exists and its
    checkPermission method denies
    access to the class loader for the class.ClassLoader, 
SecurityManager.checkPermission(java.security.Permission), 
RuntimePermissionpublic TypeVariable<Class<T>>[] getTypeParameters()
TypeVariable objects that represent the
 type variables declared by the generic declaration represented by this
 GenericDeclaration object, in declaration order.  Returns an
 array of length 0 if the underlying generic declaration declares no type
 variables.getTypeParameters in interface GenericDeclarationTypeVariable objects that represent
     the type variables declared by this generic declarationGenericSignatureFormatError - if the generic
     signature of this generic declaration does not conform to
     the format specified in
     The Java™ Virtual Machine Specificationpublic Class<? super T> getSuperclass()
Class representing the superclass of the entity
 (class, interface, primitive type or void) represented by this
 Class.  If this Class represents either the
 Object class, an interface, a primitive type, or void, then
 null is returned.  If this object represents an array class then the
 Class object representing the Object class is
 returned.public Type getGenericSuperclass()
Type representing the direct superclass of
 the entity (class, interface, primitive type or void) represented by
 this Class.
 If the superclass is a parameterized type, the Type
 object returned must accurately reflect the actual type
 parameters used in the source code. The parameterized type
 representing the superclass is created if it had not been
 created before. See the declaration of ParameterizedType for the
 semantics of the creation process for parameterized types.  If
 this Class represents either the Object
 class, an interface, a primitive type, or void, then null is
 returned.  If this object represents an array class then the
 Class object representing the Object class is
 returned.
GenericSignatureFormatError - if the generic
     class signature does not conform to the format specified in
     The Java™ Virtual Machine SpecificationTypeNotPresentException - if the generic superclass
     refers to a non-existent type declarationMalformedParameterizedTypeException - if the
     generic superclass refers to a parameterized type that cannot be
     instantiated  for any reasonpublic Package getPackage()
Packages have attributes for versions and specifications only if the information was defined in the manifests that accompany the classes, and if the class loader created the package instance with the attributes from the manifest.
public Class<?>[] getInterfaces()
 If this object represents a class, the return value is an array
 containing objects representing all interfaces implemented by the
 class. The order of the interface objects in the array corresponds to
 the order of the interface names in the implements clause
 of the declaration of the class represented by this object. For
 example, given the declaration:
 
 class Shimmer implements FloorWax, DessertTopping { ... }
 
 suppose the value of s is an instance of
 Shimmer; the value of the expression:
 
 s.getClass().getInterfaces()[0]
 
 is the Class object that represents interface
 FloorWax; and the value of:
 
 s.getClass().getInterfaces()[1]
 
 is the Class object that represents interface
 DessertTopping.
  If this object represents an interface, the array contains objects
 representing all interfaces extended by the interface. The order of the
 interface objects in the array corresponds to the order of the interface
 names in the extends clause of the declaration of the
 interface represented by this object.
 
If this object represents a class or interface that implements no interfaces, the method returns an array of length 0.
If this object represents a primitive type or void, the method returns an array of length 0.
 If this Class object represents an array type, the
 interfaces Cloneable and java.io.Serializable are
 returned in that order.
public Type[] getGenericInterfaces()
Types representing the interfaces
 directly implemented by the class or interface represented by
 this object.
 If a superinterface is a parameterized type, the
 Type object returned for it must accurately reflect
 the actual type parameters used in the source code. The
 parameterized type representing each superinterface is created
 if it had not been created before. See the declaration of
 ParameterizedType
 for the semantics of the creation process for parameterized
 types.
 
 If this object represents a class, the return value is an
 array containing objects representing all interfaces
 implemented by the class. The order of the interface objects in
 the array corresponds to the order of the interface names in
 the implements clause of the declaration of the class
 represented by this object.  In the case of an array class, the
 interfaces Cloneable and Serializable are
 returned in that order.
 
If this object represents an interface, the array contains
 objects representing all interfaces directly extended by the
 interface.  The order of the interface objects in the array
 corresponds to the order of the interface names in the
 extends clause of the declaration of the interface
 represented by this object.
 
If this object represents a class or interface that implements no interfaces, the method returns an array of length 0.
If this object represents a primitive type or void, the method returns an array of length 0.
GenericSignatureFormatError - if the generic class signature does not conform to the format
     specified in
     The Java™ Virtual Machine SpecificationTypeNotPresentException - if any of the generic
     superinterfaces refers to a non-existent type declarationMalformedParameterizedTypeException - if any of the generic superinterfaces refer to a parameterized
     type that cannot be instantiated for any reasonpublic Class<?> getComponentType()
Class representing the component type of an
 array.  If this class does not represent an array class this method
 returns null.Class representing the component type of this
 class if this class is an arrayArraypublic int getModifiers()
public, protected,
 private, final, static,
 abstract and interface; they should be decoded
 using the methods of class Modifier.
  If the underlying class is an array class, then its
 public, private and protected
 modifiers are the same as those of its component type.  If this
 Class represents a primitive type or void, its
 public modifier is always true, and its
 protected and private modifiers are always
 false. If this object represents an array class, a
 primitive type or void, then its final modifier is always
 true and its interface modifier is always
 false. The values of its other modifiers are not determined
 by this specification.
 
The modifier encodings are defined in The Java Virtual Machine Specification, table 4.1.
int representing the modifiers for this classModifierpublic Object[] getSigners()
public Method getEnclosingMethod() throws SecurityException
Class object represents a local or anonymous
 class within a method, returns a Method object representing the
 immediately enclosing method of the underlying class. Returns
 null otherwise.
 In particular, this method returns null if the underlying
 class is a local or anonymous class immediately enclosed by a type
 declaration, instance initializer or static initializer.null.SecurityException - If a security manager, s, is present and any of the
         following conditions is met:
         s.checkPermission method with
         RuntimePermission("accessDeclaredMembers")
         denies access to the methods within the enclosing class
         s.checkPackageAccess() denies access to the package
         of the enclosing class
         public Constructor<?> getEnclosingConstructor() throws SecurityException
Class object represents a local or anonymous
 class within a constructor, returns a Constructor object representing
 the immediately enclosing constructor of the underlying
 class. Returns null otherwise.  In particular, this
 method returns null if the underlying class is a local
 or anonymous class immediately enclosed by a type declaration,
 instance initializer or static initializer.null.SecurityException - If a security manager, s, is present and any of the
         following conditions is met:
         s.checkPermission method with
         RuntimePermission("accessDeclaredMembers")
         denies access to the constructors within the enclosing class
         s.checkPackageAccess() denies access to the package
         of the enclosing class
         public Class<?> getDeclaringClass() throws SecurityException
Class object
 is a member of another class, returns the Class object
 representing the class in which it was declared.  This method returns
 null if this class or interface is not a member of any other class.  If
 this Class object represents an array class, a primitive
 type, or void,then this method returns null.SecurityException - If a security manager, s, is present and the caller's
         class loader is not the same as or an ancestor of the class
         loader for the declaring class and invocation of s.checkPackageAccess()
         denies access to the package of the declaring classpublic Class<?> getEnclosingClass() throws SecurityException
null.SecurityException - If a security manager, s, is present and the caller's
             class loader is not the same as or an ancestor of the class
             loader for the enclosing class and invocation of s.checkPackageAccess()
             denies access to the package of the enclosing classpublic String getSimpleName()
The simple name of an array is the simple name of the component type with "[]" appended. In particular the simple name of an array whose component type is anonymous is "[]".
public String getTypeName()
getTypeName in interface Typepublic String getCanonicalName()
null otherwise.public boolean isAnonymousClass()
true if and only if the underlying class
 is an anonymous class.true if and only if this class is an anonymous class.public boolean isLocalClass()
true if and only if the underlying class
 is a local class.true if and only if this class is a local class.public boolean isMemberClass()
true if and only if the underlying class
 is a member class.true if and only if this class is a member class.public Class<?>[] getClasses()
Class objects representing all
 the public classes and interfaces that are members of the class
 represented by this Class object.  This includes public
 class and interface members inherited from superclasses and public class
 and interface members declared by the class.  This method returns an
 array of length 0 if this Class object has no public member
 classes or interfaces.  This method also returns an array of length 0 if
 this Class object represents a primitive type, an array
 class, or void.Class objects representing the public
         members of this classSecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Field[] getFields() throws SecurityException
Field objects reflecting all
 the accessible public fields of the class or interface represented by
 this Class object.
  If this Class object represents a class or interface with no
 no accessible public fields, then this method returns an array of length
 0.
 
 If this Class object represents a class, then this method
 returns the public fields of the class and of all its superclasses.
 
 If this Class object represents an interface, then this
 method returns the fields of the interface and of all its
 superinterfaces.
 
 If this Class object represents an array type, a primitive
 type, or void, then this method returns an array of length 0.
 
The elements in the returned array are not sorted and are not in any particular order.
Field objects representing the
         public fieldsSecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Method[] getMethods() throws SecurityException
Method objects reflecting all the
 public methods of the class or interface represented by this Class object, including those declared by the class or interface and
 those inherited from superclasses and superinterfaces.
  If this Class object represents a type that has multiple
 public methods with the same name and parameter types, but different
 return types, then the returned array has a Method object for
 each such method.
 
 If this Class object represents a type with a class
 initialization method <clinit>, then the returned array does
 not have a corresponding Method object.
 
 If this Class object represents an array type, then the
 returned array has a Method object for each of the public
 methods inherited by the array type from Object. It does not
 contain a Method object for clone().
 
 If this Class object represents an interface then the
 returned array does not contain any implicitly declared methods from
 Object. Therefore, if no methods are explicitly declared in
 this interface or any of its superinterfaces then the returned array
 has length 0. (Note that a Class object which represents a class
 always has public methods, inherited from Object.)
 
 If this Class object represents a primitive type or void,
 then the returned array has length 0.
 
 Static methods declared in superinterfaces of the class or interface
 represented by this Class object are not considered members of
 the class or interface.
 
The elements in the returned array are not sorted and are not in any particular order.
Method objects representing the
         public methods of this classSecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Constructor<?>[] getConstructors() throws SecurityException
Constructor objects reflecting
 all the public constructors of the class represented by this
 Class object.  An array of length 0 is returned if the
 class has no public constructors, or if the class is an array class, or
 if the class reflects a primitive type or void.
 Note that while this method returns an array of Constructor<T> objects (that is an array of constructors from
 this class), the return type of this method is Constructor<?>[] and not Constructor<T>[] as
 might be expected.  This less informative return type is
 necessary since after being returned from this method, the
 array could be modified to hold Constructor objects for
 different classes, which would violate the type guarantees of
 Constructor<T>[].Constructor objects representing the
         public constructors of this classSecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Field getField(String name) throws NoSuchFieldException, SecurityException
Field object that reflects the specified public member
 field of the class or interface represented by this Class
 object. The name parameter is a String specifying the
 simple name of the desired field.
 The field to be reflected is determined by the algorithm that follows. Let C be the class or interface represented by this object:
NoSuchFieldException
      is thrown. If this Class object represents an array type, then this
 method does not find the length field of the array type.
name - the field nameField object of this class specified by
         nameNoSuchFieldException - if a field with the specified name is
         not found.NullPointerException - if name is nullSecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Method getMethod(String name, Class<?>... parameterTypes) throws NoSuchMethodException, SecurityException
Method object that reflects the specified public
 member method of the class or interface represented by this
 Class object. The name parameter is a
 String specifying the simple name of the desired method. The
 parameterTypes parameter is an array of Class
 objects that identify the method's formal parameter types, in declared
 order. If parameterTypes is null, it is
 treated as if it were an empty array.
  If the name is "<init>" or "<clinit>" a
 NoSuchMethodException is raised. Otherwise, the method to
 be reflected is determined by the algorithm that follows.  Let C be the
 class or interface represented by this object:
 
Object, then this algorithm is
        invoked recursively on the superclass of C.Object, or if C is an interface, then
        the superinterfaces of C (if any) are searched for a matching
        method. If any such method is found, it is reflected.To find a matching method in a class or interface C: If C declares exactly one public method with the specified name and exactly the same formal parameter types, that is the method reflected. If more than one such method is found in C, and one of these methods has a return type that is more specific than any of the others, that method is reflected; otherwise one of the methods is chosen arbitrarily.
Note that there may be more than one matching method in a class because while the Java language forbids a class to declare multiple methods with the same signature but different return types, the Java virtual machine does not. This increased flexibility in the virtual machine can be used to implement various language features. For example, covariant returns can be implemented with bridge methods; the bridge method and the method being overridden would have the same signature but different return types.
 If this Class object represents an array type, then this
 method does not find the clone() method.
 
 Static methods declared in superinterfaces of the class or interface
 represented by this Class object are not considered members of
 the class or interface.
name - the name of the methodparameterTypes - the list of parametersMethod object that matches the specified
         name and parameterTypesNoSuchMethodException - if a matching method is not found
         or if the name is "<init>"or "<clinit>".NullPointerException - if name is nullSecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Constructor<T> getConstructor(Class<?>... parameterTypes) throws NoSuchMethodException, SecurityException
Constructor object that reflects the specified
 public constructor of the class represented by this Class
 object. The parameterTypes parameter is an array of
 Class objects that identify the constructor's formal
 parameter types, in declared order.
 If this Class object represents an inner class
 declared in a non-static context, the formal parameter types
 include the explicit enclosing instance as the first parameter.
  The constructor to reflect is the public constructor of the class
 represented by this Class object whose formal parameter
 types match those specified by parameterTypes.
parameterTypes - the parameter arrayConstructor object of the public constructor that
         matches the specified parameterTypesNoSuchMethodException - if a matching method is not found.SecurityException - If a security manager, s, is present and
         the caller's class loader is not the same as or an
         ancestor of the class loader for the current class and
         invocation of s.checkPackageAccess() denies access to the package
         of this class.public Class<?>[] getDeclaredClasses() throws SecurityException
Class objects reflecting all the
 classes and interfaces declared as members of the class represented by
 this Class object. This includes public, protected, default
 (package) access, and private classes and interfaces declared by the
 class, but excludes inherited classes and interfaces.  This method
 returns an array of length 0 if the class declares no classes or
 interfaces as members, or if this Class object represents a
 primitive type, an array class, or void.Class objects representing all the
         declared members of this classSecurityException - If a security manager, s, is present and any of the
         following conditions is met:
         s.checkPermission method with
         RuntimePermission("accessDeclaredMembers")
         denies access to the declared classes within this class
         s.checkPackageAccess() denies access to the package
         of this class
         public Field[] getDeclaredFields() throws SecurityException
Field objects reflecting all the fields
 declared by the class or interface represented by this
 Class object. This includes public, protected, default
 (package) access, and private fields, but excludes inherited fields.
  If this Class object represents a class or interface with no
 declared fields, then this method returns an array of length 0.
 
 If this Class object represents an array type, a primitive
 type, or void, then this method returns an array of length 0.
 
The elements in the returned array are not sorted and are not in any particular order.
Field objects representing all the
          declared fields of this classSecurityException - If a security manager, s, is present and any of the
          following conditions is met:
          s.checkPermission method with
          RuntimePermission("accessDeclaredMembers")
          denies access to the declared fields within this class
          s.checkPackageAccess() denies access to the package
          of this class
          public Method[] getDeclaredMethods() throws SecurityException
Method objects reflecting all the
 declared methods of the class or interface represented by this Class object, including public, protected, default (package)
 access, and private methods, but excluding inherited methods.
  If this Class object represents a type that has multiple
 declared methods with the same name and parameter types, but different
 return types, then the returned array has a Method object for
 each such method.
 
 If this Class object represents a type that has a class
 initialization method <clinit>, then the returned array does
 not have a corresponding Method object.
 
 If this Class object represents a class or interface with no
 declared methods, then the returned array has length 0.
 
 If this Class object represents an array type, a primitive
 type, or void, then the returned array has length 0.
 
The elements in the returned array are not sorted and are not in any particular order.
Method objects representing all the
          declared methods of this classSecurityException - If a security manager, s, is present and any of the
          following conditions is met:
          s.checkPermission method with
          RuntimePermission("accessDeclaredMembers")
          denies access to the declared methods within this class
          s.checkPackageAccess() denies access to the package
          of this class
          public Constructor<?>[] getDeclaredConstructors() throws SecurityException
Constructor objects reflecting all the
 constructors declared by the class represented by this
 Class object. These are public, protected, default
 (package) access, and private constructors.  The elements in the array
 returned are not sorted and are not in any particular order.  If the
 class has a default constructor, it is included in the returned array.
 This method returns an array of length 0 if this Class
 object represents an interface, a primitive type, an array class, or
 void.
 See The Java Language Specification, section 8.2.
Constructor objects representing all the
          declared constructors of this classSecurityException - If a security manager, s, is present and any of the
          following conditions is met:
          s.checkPermission method with
          RuntimePermission("accessDeclaredMembers")
          denies access to the declared constructors within this class
          s.checkPackageAccess() denies access to the package
          of this class
          public Field getDeclaredField(String name) throws NoSuchFieldException, SecurityException
Field object that reflects the specified declared
 field of the class or interface represented by this Class
 object. The name parameter is a String that specifies
 the simple name of the desired field.
  If this Class object represents an array type, then this
 method does not find the length field of the array type.
name - the name of the fieldField object for the specified field in this
          classNoSuchFieldException - if a field with the specified name is
          not found.NullPointerException - if name is nullSecurityException - If a security manager, s, is present and any of the
          following conditions is met:
          s.checkPermission method with
          RuntimePermission("accessDeclaredMembers")
          denies access to the declared field
          s.checkPackageAccess() denies access to the package
          of this class
          public Method getDeclaredMethod(String name, Class<?>... parameterTypes) throws NoSuchMethodException, SecurityException
Method object that reflects the specified
 declared method of the class or interface represented by this
 Class object. The name parameter is a
 String that specifies the simple name of the desired
 method, and the parameterTypes parameter is an array of
 Class objects that identify the method's formal parameter
 types, in declared order.  If more than one method with the same
 parameter types is declared in a class, and one of these methods has a
 return type that is more specific than any of the others, that method is
 returned; otherwise one of the methods is chosen arbitrarily.  If the
 name is "<init>"or "<clinit>" a NoSuchMethodException
 is raised.
  If this Class object represents an array type, then this
 method does not find the clone() method.
name - the name of the methodparameterTypes - the parameter arrayMethod object for the method of this class
          matching the specified name and parametersNoSuchMethodException - if a matching method is not found.NullPointerException - if name is nullSecurityException - If a security manager, s, is present and any of the
          following conditions is met:
          s.checkPermission method with
          RuntimePermission("accessDeclaredMembers")
          denies access to the declared method
          s.checkPackageAccess() denies access to the package
          of this class
          public Constructor<T> getDeclaredConstructor(Class<?>... parameterTypes) throws NoSuchMethodException, SecurityException
Constructor object that reflects the specified
 constructor of the class or interface represented by this
 Class object.  The parameterTypes parameter is
 an array of Class objects that identify the constructor's
 formal parameter types, in declared order.
 If this Class object represents an inner class
 declared in a non-static context, the formal parameter types
 include the explicit enclosing instance as the first parameter.parameterTypes - the parameter arrayConstructor object for the constructor with the
          specified parameter listNoSuchMethodException - if a matching method is not found.SecurityException - If a security manager, s, is present and any of the
          following conditions is met:
          s.checkPermission method with
          RuntimePermission("accessDeclaredMembers")
          denies access to the declared constructor
          s.checkPackageAccess() denies access to the package
          of this class
          public InputStream getResourceAsStream(String name)
ClassLoader.getSystemResourceAsStream(java.lang.String).
 Before delegation, an absolute resource name is constructed from the given resource name using this algorithm:
name begins with a '/'
 ('\u002f'), then the absolute name of the resource is the
 portion of the name following the '/'.
 
   modified_package_name/name
 
  Where the modified_package_name is the package name of this
 object with '/' substituted for '.'
 ('\u002e').
 
name - name of the desired resourceInputStream object or null if
              no resource with this name is foundNullPointerException - If name is nullpublic URL getResource(String name)
ClassLoader.getSystemResource(java.lang.String).
 Before delegation, an absolute resource name is constructed from the given resource name using this algorithm:
name begins with a '/'
 ('\u002f'), then the absolute name of the resource is the
 portion of the name following the '/'.
 
   modified_package_name/name
 
  Where the modified_package_name is the package name of this
 object with '/' substituted for '.'
 ('\u002e').
 
name - name of the desired resourceURL object or null if no
              resource with this name is foundpublic ProtectionDomain getProtectionDomain()
ProtectionDomain of this class.  If there is a
 security manager installed, this method first calls the security
 manager's checkPermission method with a
 RuntimePermission("getProtectionDomain") permission to
 ensure it's ok to get the
 ProtectionDomain.SecurityException - if a security manager exists and its
        checkPermission method doesn't allow
        getting the ProtectionDomain.ProtectionDomain, 
SecurityManager.checkPermission(java.security.Permission), 
RuntimePermissionpublic boolean desiredAssertionStatus()
Few programmers will have any need for this method; it is provided for the benefit of the JRE itself. (It allows a class to determine at the time that it is initialized whether assertions should be enabled.) Note that this method is not guaranteed to return the actual assertion status that was (or will be) associated with the specified class when it was (or will be) initialized.
ClassLoader.setClassAssertionStatus(java.lang.String, boolean), 
ClassLoader.setPackageAssertionStatus(java.lang.String, boolean), 
ClassLoader.setDefaultAssertionStatus(boolean)public boolean isEnum()
public T[] getEnumConstants()
public T cast(Object obj)
Class object.obj - the object to be castClassCastException - if the object is not
 null and is not assignable to the type T.public <U> Class<? extends U> asSubclass(Class<U> clazz)
Class object to represent a subclass of the class
 represented by the specified class object.  Checks that the cast
 is valid, and throws a ClassCastException if it is not.  If
 this method succeeds, it always returns a reference to this class object.
 This method is useful when a client needs to "narrow" the type of
 a Class object to pass it to an API that restricts the
 Class objects that it is willing to accept.  A cast would
 generate a compile-time warning, as the correctness of the cast
 could not be checked at runtime (because generic types are implemented
 by erasure).
U - the type to cast this class object toclazz - the class of the type to cast this class object toClass object, cast to represent a subclass of
    the specified class object.ClassCastException - if this Class object does not
    represent a subclass of the specified class (here "subclass" includes
    the class itself).public <A extends Annotation> A getAnnotation(Class<A> annotationClass)
AnnotatedElementgetAnnotation in interface AnnotatedElementA - the type of the annotation to query for and return if presentannotationClass - the Class object corresponding to the
        annotation typeNullPointerException - if the given annotation class is nullpublic boolean isAnnotationPresent(Class<? extends Annotation> annotationClass)
The truth value returned by this method is equivalent to:
 getAnnotation(annotationClass) != null
 
The body of the default method is specified to be the code above.
isAnnotationPresent in interface AnnotatedElementannotationClass - the Class object corresponding to the
        annotation typeNullPointerException - if the given annotation class is nullpublic <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationClass)
AnnotatedElementAnnotatedElement.getAnnotation(Class)
 is that this method detects if its argument is a repeatable
 annotation type (JLS 9.6), and if so, attempts to find one or
 more annotations of that type by "looking through" a container
 annotation.
 The caller of this method is free to modify the returned array; it will
 have no effect on the arrays returned to other callers.getAnnotationsByType in interface AnnotatedElementA - the type of the annotation to query for and return if presentannotationClass - the Class object corresponding to the
        annotation typeNullPointerException - if the given annotation class is nullpublic Annotation[] getAnnotations()
AnnotatedElementgetAnnotations in interface AnnotatedElementpublic <A extends Annotation> A getDeclaredAnnotation(Class<A> annotationClass)
AnnotatedElementgetDeclaredAnnotation in interface AnnotatedElementA - the type of the annotation to query for and return if directly presentannotationClass - the Class object corresponding to the
        annotation typeNullPointerException - if the given annotation class is nullpublic <A extends Annotation> A[] getDeclaredAnnotationsByType(Class<A> annotationClass)
AnnotatedElementAnnotatedElement.getDeclaredAnnotation(Class) is that this method detects if its
 argument is a repeatable annotation type (JLS 9.6), and if so,
 attempts to find one or more annotations of that type by "looking
 through" a container annotation if one is present.
 The caller of this method is free to modify the returned array; it will
 have no effect on the arrays returned to other callers.getDeclaredAnnotationsByType in interface AnnotatedElementA - the type of the annotation to query for and return
 if directly or indirectly presentannotationClass - the Class object corresponding to the
        annotation typeNullPointerException - if the given annotation class is nullpublic Annotation[] getDeclaredAnnotations()
AnnotatedElementgetDeclaredAnnotations in interface AnnotatedElementpublic AnnotatedType getAnnotatedSuperclass()
AnnotatedType object that represents the use of a
 type to specify the superclass of the entity represented by this Class object. (The use of type Foo to specify the superclass
 in '...  extends Foo' is distinct from the declaration of type
 Foo.)
  If this Class object represents a type whose declaration
 does not explicitly indicate an annotated superclass, then the return
 value is an AnnotatedType object representing an element with no
 annotations.
 
 If this Class represents either the Object class, an
 interface type, an array type, a primitive type, or void, the return
 value is null.
public AnnotatedType[] getAnnotatedInterfaces()
AnnotatedType objects that represent the use
 of types to specify superinterfaces of the entity represented by this
 Class object. (The use of type Foo to specify a
 superinterface in '... implements Foo' is distinct from the
 declaration of type Foo.)
  If this Class object represents a class, the return value is
 an array containing objects representing the uses of interface types to
 specify interfaces implemented by the class. The order of the objects in
 the array corresponds to the order of the interface types used in the
 'implements' clause of the declaration of this Class object.
 
 If this Class object represents an interface, the return
 value is an array containing objects representing the uses of interface
 types to specify interfaces directly extended by the interface. The
 order of the objects in the array corresponds to the order of the
 interface types used in the 'extends' clause of the declaration of this
 Class object.
 
 If this Class object represents a class or interface whose
 declaration does not explicitly indicate any annotated superinterfaces,
 the return value is an array of length 0.
 
 If this Class object represents either the Object
 class, an array type, a primitive type, or void, the return value is an
 array of length 0.
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