Uses of Class
java.lang.Class

Packages that use Class

Package	Description
java.io
java.lang
java.lang.annotation
java.lang.reflect	Provides classes and interfaces for obtaining reflective information about classes and objects.
java.net
java.util

Uses of Class in java.io

Methods in java.io that return Class

Modifier and Type	Method and Description
Class<?>	ObjectStreamClass.forClass() Return the class in the local VM that this version is mapped to.
Class<?>	ObjectStreamField.getType() Get the type of the field.
protected Class<?>	ObjectInputStream.resolveClass(ObjectStreamClass desc) Load the local class equivalent of the specified stream class description.
protected Class<?>	ObjectInputStream.resolveProxyClass(String[] interfaces) Returns a proxy class that implements the interfaces named in a proxy class descriptor; subclasses may implement this method to read custom data from the stream along with the descriptors for dynamic proxy classes, allowing them to use an alternate loading mechanism for the interfaces and the proxy class.

Methods in java.io with parameters of type Class

Modifier and Type	Method and Description
protected void	ObjectOutputStream.annotateClass(Class<?> cl) Subclasses may implement this method to allow class data to be stored in the stream.
protected void	ObjectOutputStream.annotateProxyClass(Class<?> cl) Subclasses may implement this method to store custom data in the stream along with descriptors for dynamic proxy classes.
static ObjectStreamClass	ObjectStreamClass.lookup(Class<?> cl) Find the descriptor for a class that can be serialized.
static ObjectStreamClass	ObjectStreamClass.lookupAny(Class<?> cl) Returns the descriptor for any class, regardless of whether it implements Serializable.

Constructors in java.io with parameters of type Class

Constructor and Description
ObjectStreamField(String name, Class<?> type) Create a Serializable field with the specified type.
ObjectStreamField(String name, Class<?> type, boolean unshared) Creates an ObjectStreamField representing a serializable field with the given name and type.

Uses of Class in java.lang

Fields in java.lang declared as Class

Modifier and Type	Field and Description
static Class<Void>	Void.TYPE The Class object representing the pseudo-type corresponding to the keyword void.
static Class<Short>	Short.TYPE The Class instance representing the primitive type short.
static Class<Long>	Long.TYPE The Class instance representing the primitive type long.
static Class<Integer>	Integer.TYPE The Class instance representing the primitive type int.
static Class<Float>	Float.TYPE The Class instance representing the primitive type float.
static Class<Double>	Double.TYPE The Class instance representing the primitive type double.
static Class<Character>	Character.TYPE The Class instance representing the primitive type char.
static Class<Byte>	Byte.TYPE The Class instance representing the primitive type byte.
static Class<Boolean>	Boolean.TYPE The Class object representing the primitive type boolean.

Methods in java.lang that return Class

Modifier and Type	Method and Description
<U> Class<? extends U>	Class.asSubclass(Class<U> clazz) Casts this Class object to represent a subclass of the class represented by the specified class object.
protected Class<?>	ClassLoader.defineClass(byte[] b, int off, int len) Deprecated. Replaced by defineClass(String, byte[], int, int)
protected Class<?>	ClassLoader.defineClass(String name, byte[] b, int off, int len) Converts an array of bytes into an instance of class Class.
protected Class<?>	ClassLoader.findClass(String name) Finds the class with the specified binary name.
protected Class<?>	ClassLoader.findLoadedClass(String name) Returns the class with the given binary name if this loader has been recorded by the Java virtual machine as an initiating loader of a class with that binary name.
static Class<?>	Class.forName(String className) Returns the Class object associated with the class or interface with the given string name.
static Class<?>	Class.forName(String name, boolean initialize, ClassLoader loader) Returns the Class object associated with the class or interface with the given string name, using the given class loader.
Class<?>	Object.getClass() Returns the runtime class of this Object.
Class<?>	Class.getComponentType() Returns the Class representing the component type of an array.
Class<E>	Enum.getDeclaringClass() Returns the Class object corresponding to this enum constant's enum type.
Class<?>[]	Class.getInterfaces() Determines the interfaces implemented by the class or interface represented by this object.
Class<? super T>	Class.getSuperclass() Returns the Class representing the superclass of the entity (class, interface, primitive type or void) represented by this Class.
Class<?>	ClassLoader.loadClass(String name) Loads the class with the specified binary name.
protected Class<?>	ClassLoader.loadClass(String name, boolean resolve) Loads the class with the specified binary name.

Methods in java.lang with parameters of type Class

Modifier and Type	Method and Description
<U> Class<? extends U>	Class.asSubclass(Class<U> clazz) Casts this Class object to represent a subclass of the class represented by the specified class object.
<A extends Annotation> A	Class.getAnnotation(Class<A> annotationClass)
Method	Class.getMethod(String name, Class<?>... parameterTypes) Returns a Method object that reflects the specified public member method of the class or interface represented by this Class object.
boolean	Class.isAnnotationPresent(Class<? extends Annotation> annotationClass)
boolean	Class.isAssignableFrom(Class<?> cls) Determines if the class or interface represented by this Class object is either the same as, or is a superclass or superinterface of, the class or interface represented by the specified Class parameter.
protected void	ClassLoader.resolveClass(Class<?> c) Links the specified class.
protected void	ClassLoader.setSigners(Class<?> c, Object[] signers) Sets the signers of a class.
static <T extends Enum<T>> T	Enum.valueOf(Class<T> enumType, String name) Returns the enum constant of the specified enum type with the specified name.

Uses of Class in java.lang.annotation

Methods in java.lang.annotation that return Class

Modifier and Type	Method and Description
Class<? extends Annotation>	Annotation.annotationType() Returns the annotation type of this annotation.

Uses of Class in java.lang.reflect

Methods in java.lang.reflect that return Class

Modifier and Type	Method and Description
Class<?>	Method.getDeclaringClass() Returns the Class object representing the class or interface that declares the method represented by this Method object.
Class<?>	Member.getDeclaringClass() Returns the Class object representing the class or interface that declares the member or constructor represented by this Member.
Class<?>	Field.getDeclaringClass() Returns the Class object representing the class or interface that declares the field represented by this Field object.
Class<T>	Constructor.getDeclaringClass() Returns the Class object representing the class that declares the constructor represented by this Constructor object.
Class<?>[]	Method.getExceptionTypes() Returns an array of Class objects that represent the types of the exceptions declared to be thrown by the underlying method represented by this Method object.
Class<?>[]	Constructor.getExceptionTypes() Returns an array of Class objects that represent the types of exceptions declared to be thrown by the underlying constructor represented by this Constructor object.
Class<?>[]	Method.getParameterTypes() Returns an array of Class objects that represent the formal parameter types, in declaration order, of the method represented by this Method object.
Class<?>[]	Constructor.getParameterTypes() Returns an array of Class objects that represent the formal parameter types, in declaration order, of the constructor represented by this Constructor object.
static Class<?>	Proxy.getProxyClass(ClassLoader loader, Class<?>... interfaces) Returns the java.lang.Class object for a proxy class given a class loader and an array of interfaces.
Class<?>	Method.getReturnType() Returns a Class object that represents the formal return type of the method represented by this Method object.
Class<?>	Field.getType() Returns a Class object that identifies the declared type for the field represented by this Field object.

Methods in java.lang.reflect with parameters of type Class

Modifier and Type	Method and Description
<T extends Annotation> T	Method.getAnnotation(Class<T> annotationClass)
<T extends Annotation> T	Field.getAnnotation(Class<T> annotationClass)
<T extends Annotation> T	Constructor.getAnnotation(Class<T> annotationClass)
<T extends Annotation> T	AnnotatedElement.getAnnotation(Class<T> annotationClass) Returns this element's annotation for the specified type if such an annotation is present, else null.
<T extends Annotation> T	AccessibleObject.getAnnotation(Class<T> annotationClass)
static Class<?>	Proxy.getProxyClass(ClassLoader loader, Class<?>... interfaces) Returns the java.lang.Class object for a proxy class given a class loader and an array of interfaces.
boolean	AnnotatedElement.isAnnotationPresent(Class<? extends Annotation> annotationClass) Returns true if an annotation for the specified type is present on this element, else false.
boolean	AccessibleObject.isAnnotationPresent(Class<? extends Annotation> annotationClass)
static boolean	Proxy.isProxyClass(Class<?> cl) Returns true if and only if the specified class was dynamically generated to be a proxy class using the getProxyClass method or the newProxyInstance method.
static Object	Array.newInstance(Class<?> componentType, int... dimensions) Creates a new array with the specified component type and dimensions.
static Object	Array.newInstance(Class<?> componentType, int length) Creates a new array with the specified component type and length.
static Object	Proxy.newProxyInstance(ClassLoader loader, Class<?>[] interfaces, InvocationHandler h) Returns an instance of a proxy class for the specified interfaces that dispatches method invocations to the specified invocation handler.

Uses of Class in java.net

Methods in java.net with parameters of type Class

Modifier and Type	Method and Description
Object	URL.getContent(Class[] classes) Gets the contents of this URL.

Uses of Class in java.util

Methods in java.util with parameters of type Class

Modifier and Type	Method and Description
static <E> Collection<E>	Collections.checkedCollection(Collection<E> c, Class<E> type) Returns a dynamically typesafe view of the specified collection.
static <E> List<E>	Collections.checkedList(List<E> list, Class<E> type) Returns a dynamically typesafe view of the specified list.
static <K,V> Map<K,V>	Collections.checkedMap(Map<K,V> m, Class<K> keyType, Class<V> valueType) Returns a dynamically typesafe view of the specified map.
static <K,V> Map<K,V>	Collections.checkedMap(Map<K,V> m, Class<K> keyType, Class<V> valueType) Returns a dynamically typesafe view of the specified map.
static <E> Set<E>	Collections.checkedSet(Set<E> s, Class<E> type) Returns a dynamically typesafe view of the specified set.
static <K,V> SortedMap<K,V>	Collections.checkedSortedMap(SortedMap<K,V> m, Class<K> keyType, Class<V> valueType) Returns a dynamically typesafe view of the specified sorted map.
static <K,V> SortedMap<K,V>	Collections.checkedSortedMap(SortedMap<K,V> m, Class<K> keyType, Class<V> valueType) Returns a dynamically typesafe view of the specified sorted map.
static <E> SortedSet<E>	Collections.checkedSortedSet(SortedSet<E> s, Class<E> type) Returns a dynamically typesafe view of the specified sorted set.
static <T,U> T[]	Arrays.copyOf(U[] original, int newLength, Class<? extends T[]> newType) Copies the specified array, truncating or padding with nulls (if necessary) so the copy has the specified length.
static <T,U> T[]	Arrays.copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType) Copies the specified range of the specified array into a new array.
static <S> ServiceLoader<S>	ServiceLoader.load(Class<S> service) Creates a new service loader for the given service type, using the current thread's context class loader.
static <S> ServiceLoader<S>	ServiceLoader.load(Class<S> service, ClassLoader loader) Creates a new service loader for the given service type and class loader.
static <S> ServiceLoader<S>	ServiceLoader.loadInstalled(Class<S> service) Creates a new service loader for the given service type, using the extension class loader.