# Uses of Class
java.lang.Class

Packages that use Class
Package
Description
com.sun.java.accessibility.util
Provides a collection of interfaces and classes that compose the Java Accessibility Utilities.
com.sun.source.tree
Provides interfaces to represent source code as abstract syntax trees (AST).
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.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.annotation
Provides library support for the Java programming language annotation facility.
java.lang.instrument
Provides services that allow Java programming language agents to instrument programs running on the JVM.
java.lang.invoke
The `java.lang.invoke` package provides low-level primitives for interacting with the Java Virtual Machine.
java.lang.management
Provides the management interfaces for monitoring and management of the Java virtual machine and other components in the Java runtime.
java.lang.reflect
Provides classes and interfaces for obtaining reflective information about classes and objects.
java.lang.runtime
The `java.lang.runtime` package provides low-level runtime support for the Java language.
java.net
Provides the classes for implementing networking applications.
java.nio.file
Defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems.
java.nio.file.spi
Service-provider classes for the `java.nio.file` package.
java.rmi.server
Provides classes and interfaces for supporting the server side of RMI.
java.security
Provides the classes and interfaces for the security framework.
java.sql
Provides the API for accessing and processing data stored in a data source (usually a relational database) using the Java programming language.
java.util
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
java.util.concurrent.atomic
A small toolkit of classes that support lock-free thread-safe programming on single variables.
java.util.prefs
This package allows applications to store and retrieve user and system preference and configuration data.
javax.annotation.processing
Facilities for declaring annotation processors and for allowing annotation processors to communicate with an annotation processing tool environment.
javax.crypto
Provides the classes and interfaces for cryptographic operations.
javax.imageio.metadata
A package of the Java Image I/O API dealing with reading and writing metadata.
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
Types and hierarchies of packages comprising a Java language model, a model of the declarations and types of 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.management
Provides the core classes for the Java Management Extensions.
javax.management.loading
Provides the classes which implement advanced dynamic loading.
javax.management.openmbean
Provides the open data types and Open MBean descriptor classes.
javax.naming.spi
Provides the means for dynamically plugging in support for accessing naming and directory services through the `javax.naming` and related packages.
javax.print
Provides the principal classes and interfaces for the Java Print Service API.
javax.print.attribute
Provides classes and interfaces that describe the types of Java 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.script
The scripting API consists of interfaces and classes that define Java 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.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 Java programming language.
javax.sql.rowset
Standard interfaces and base classes for JDBC `RowSet` implementations.
javax.sql.rowset.serial
Provides utility classes to allow serializable mappings between SQL types and data types in the Java programming language.
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.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.tree
Provides classes and interfaces for dealing with `javax.swing.JTree`.
javax.tools
Provides interfaces for tools which can be invoked from a program, for example, compilers.
javax.xml.xpath
Provides an object-model neutral API for the evaluation of XPath expressions and access to the evaluation environment.
jdk.dynalink.beans
Contains the linker for ordinary Java objects.
jdk.dynalink.linker
Contains interfaces and classes needed by language runtimes to implement their own language-specific object models and type conversions.
jdk.dynalink.linker.support
Contains classes that make it more convenient for language runtimes to implement their own language-specific object models and type conversions by providing basic implementations of some classes as well as various utilities.
jdk.incubator.foreign
Classes to support low-level and efficient foreign memory/function access, directly from Java.
jdk.incubator.vector
Incubating Feature. Will be removed in a future release.
jdk.jfr
This package provides classes to create events and control Flight Recorder.
jdk.jfr.consumer
This package contains classes for consuming Flight Recorder data.
jdk.jshell.execution
Provides implementation support for building JShell execution engines.
jdk.net
Platform specific socket options for the `java.net` and `java.nio.channels` socket classes.

## Uses of Class in com.sun.java.accessibility.util

Methods in com.sun.java.accessibility.util that return Class
Modifier and Type
Method
Description
`protected static Class<?>`
Translator.`getTranslatorClass(Class<?> c)`
Find a translator for this class.
Methods in com.sun.java.accessibility.util with parameters of type Class
Modifier and Type
Method
Description
`void`
AccessibilityListenerList.`add(Class<? extends EventListener> t, EventListener l)`
Add the listener as a listener of the specified type.
`int`
AccessibilityListenerList.`getListenerCount(Class<? extends EventListener> t)`
Return the total number of listeners of the supplied type for this listener list.
`protected static Class<?>`
Translator.`getTranslatorClass(Class<?> c)`
Find a translator for this class.
`void`
AccessibilityListenerList.`remove(Class<? extends EventListener> t, EventListener l)`
Remove the listener as a listener of the specified type.

## Uses of Class in com.sun.source.tree

Methods in com.sun.source.tree that return Class
Modifier and Type
Method
Description
`Class<? extends Tree>`
Tree.Kind.`asInterface()`
Returns the associated interface type that uses this kind.

## Uses of Class in java.awt

Methods in java.awt with parameters of type Class
Modifier and Type
Method
Description
`<T extends DragGestureRecognizer>
T`
Toolkit.`createDragGestureRecognizer(Class<T> abstractRecognizerClass, DragSource ds, Component c, int srcActions, DragGestureListener dgl)`
Creates a concrete, platform dependent, subclass of the abstract DragGestureRecognizer class requested, and associates it with the DragSource, Component and DragGestureListener specified.
`static <T extends EventListener>
T[]`
AWTEventMulticaster.`getListeners(EventListener l, Class<T> listenerType)`
Returns an array of all the objects chained as `FooListener`s by the specified `java.util.EventListener`.
`<T extends EventListener>
T[]`
Button.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Button`.
`<T extends EventListener>
T[]`
Checkbox.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Checkbox`.
`<T extends EventListener>
T[]`
CheckboxMenuItem.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `CheckboxMenuItem`.
`<T extends EventListener>
T[]`
Choice.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Choice`.
`<T extends EventListener>
T[]`
Component.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Component`.
`<T extends EventListener>
T[]`
Container.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Container`.
`<T extends EventListener>
T[]`
List.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `List`.
`<T extends EventListener>
T[]`
MenuItem.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `MenuItem`.
`<T extends EventListener>
T[]`
Scrollbar.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Scrollbar`.
`<T extends EventListener>
T[]`
TextComponent.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `TextComponent`.
`<T extends EventListener>
T[]`
TextField.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `TextField`.
`<T extends EventListener>
T[]`
Window.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Window`.
`protected static void`
AWTKeyStroke.`registerSubclass(Class<?> subclass)`
Deprecated.

## Uses of Class in java.awt.datatransfer

Methods in java.awt.datatransfer that return Class
Modifier and Type
Method
Description
`final Class<?>`
DataFlavor.`getDefaultRepresentationClass()`
Returns the default representation class.
`Class<?>`
DataFlavor.`getRepresentationClass()`
Returns the `Class` which objects supporting this `DataFlavor` will return when this `DataFlavor` is requested.
`protected static final Class<?>`
DataFlavor.`tryToLoadClass(String className, ClassLoader fallback)`
Tries to load a class from: the bootstrap loader, the system loader, the context loader (if one is present) and finally the loader specified.
Constructors in java.awt.datatransfer with parameters of type Class
Modifier
Constructor
Description
``
`DataFlavor(Class<?> representationClass, String humanPresentableName)`
Constructs a `DataFlavor` that represents a Java class.

## Uses of Class in java.awt.dnd

Methods in java.awt.dnd with parameters of type Class
Modifier and Type
Method
Description
`<T extends DragGestureRecognizer>
T`
DragSource.`createDragGestureRecognizer(Class<T> recognizerAbstractClass, Component c, int actions, DragGestureListener dgl)`
Creates a new `DragGestureRecognizer` that implements the specified abstract subclass of `DragGestureRecognizer`, and sets the specified `Component` and `DragGestureListener` on the newly created object.
`<T extends EventListener>
T[]`
DragSource.`getListeners(Class<T> listenerType)`
Gets all the objects currently registered as `FooListener`s upon this `DragSource`.

## Uses of Class in java.awt.image.renderable

Methods in java.awt.image.renderable that return Class
Modifier and Type
Method
Description
`Class<?>[]`
ParameterBlock.`getParamClasses()`
Returns an array of Class objects describing the types of the parameters.

## Uses of Class in java.beans

Methods in java.beans that return Class
Modifier and Type
Method
Description
`Class<?>`
BeanDescriptor.`getBeanClass()`
Gets the bean's Class object.
`Class<?>`
BeanDescriptor.`getCustomizerClass()`
Gets the Class object for the bean's customizer.
`Class<?>`
IndexedPropertyDescriptor.`getIndexedPropertyType()`
Returns the Java type info for the indexed property.
`Class<?>`
EventSetDescriptor.`getListenerType()`
Gets the `Class` object for the target interface.
`Class<?>`
PropertyDescriptor.`getPropertyEditorClass()`
Gets any explicit PropertyEditor Class that has been registered for this property.
`Class<?>`
PropertyDescriptor.`getPropertyType()`
Returns the Java type info for the property.
Methods in java.beans with parameters of type Class
Modifier and Type
Method
Description
`static <T> T`
EventHandler.`create(Class<T> listenerInterface, Object target, String action)`
Creates an implementation of `listenerInterface` in which all of the methods in the listener interface apply the handler's `action` to the `target`.
`static <T> T`
EventHandler.`create(Class<T> listenerInterface, Object target, String action, String eventPropertyName)`
/** Creates an implementation of `listenerInterface` in which all of the methods pass the value of the event expression, `eventPropertyName`, to the final method in the statement, `action`, which is applied to the `target`.
`static <T> T`
EventHandler.`create(Class<T> listenerInterface, Object target, String action, String eventPropertyName, String listenerMethodName)`
Creates an implementation of `listenerInterface` in which the method named `listenerMethodName` passes the value of the event expression, `eventPropertyName`, to the final method in the statement, `action`, which is applied to the `target`.
`static PropertyEditor`
PropertyEditorManager.`findEditor(Class<?> targetType)`
Locate a value editor for a given target type.
`static void`
Introspector.`flushFromCaches(Class<?> clz)`
Flush the Introspector's internal cached information for a given class.
`static BeanInfo`
Introspector.`getBeanInfo(Class<?> beanClass)`
Introspect on a Java Bean and learn about all its properties, exposed methods, and events.
`static BeanInfo`
Introspector.`getBeanInfo(Class<?> beanClass, int flags)`
Introspect on a Java bean and learn about all its properties, exposed methods, and events, subject to some control flags.
`static BeanInfo`
Introspector.`getBeanInfo(Class<?> beanClass, Class<?> stopClass)`
Introspect on a Java bean and learn all about its properties, exposed methods, below a given "stop" point.
`static BeanInfo`
Introspector.`getBeanInfo(Class<?> beanClass, Class<?> stopClass, int flags)`
Introspect on a Java Bean and learn about all its properties, exposed methods and events, below a given `stopClass` point subject to some control `flags`.
`static Object`
Beans.`getInstanceOf(Object bean, Class<?> targetType)`
From a given bean, obtain an object representing a specified type view of that source object.
`PersistenceDelegate`
Encoder.`getPersistenceDelegate(Class<?> type)`
Returns the persistence delegate for the given type.
`protected void`
DefaultPersistenceDelegate.`initialize(Class<?> type, Object oldInstance, Object newInstance, Encoder out)`
This default implementation of the `initialize` method assumes all state held in objects of this type is exposed via the matching pairs of "setter" and "getter" methods in the order they are returned by the Introspector.
`protected void`
PersistenceDelegate.`initialize(Class<?> type, Object oldInstance, Object newInstance, Encoder out)`
Produce a series of statements with side effects on `newInstance` so that the new instance becomes equivalent to `oldInstance`.
`static boolean`
Beans.`isInstanceOf(Object bean, Class<?> targetType)`
Check if a bean can be viewed as a given target type.
`static void`
PropertyEditorManager.`registerEditor(Class<?> targetType, Class<?> editorClass)`
Registers an editor class to edit values of the given target class.
`void`
Encoder.`setPersistenceDelegate(Class<?> type, PersistenceDelegate delegate)`
Associates the specified persistence delegate with the given type.
`void`
PropertyDescriptor.`setPropertyEditorClass(Class<?> propertyEditorClass)`
Normally PropertyEditors will be found using the PropertyEditorManager.
Constructors in java.beans with parameters of type Class
Modifier
Constructor
Description
``
`BeanDescriptor(Class<?> beanClass)`
Create a BeanDescriptor for a bean that doesn't have a customizer.
``
`BeanDescriptor(Class<?> beanClass, Class<?> customizerClass)`
Create a BeanDescriptor for a bean that has a customizer.
``
`EventSetDescriptor(Class<?> sourceClass, String eventSetName, Class<?> listenerType, String listenerMethodName)`
Creates an `EventSetDescriptor` assuming that you are following the most simple standard design pattern where a named event "fred" is (1) delivered as a call on the single method of interface FredListener, (2) has a single argument of type FredEvent, and (3) where the FredListener may be registered with a call on an addFredListener method of the source component and removed with a call on a removeFredListener method.
``
`EventSetDescriptor(Class<?> sourceClass, String eventSetName, Class<?> listenerType, String[] listenerMethodNames, String addListenerMethodName, String removeListenerMethodName)`
Creates an `EventSetDescriptor` from scratch using string names.
``
`EventSetDescriptor(Class<?> sourceClass, String eventSetName, Class<?> listenerType, String[] listenerMethodNames, String addListenerMethodName, String removeListenerMethodName, String getListenerMethodName)`
This constructor creates an EventSetDescriptor from scratch using string names.
``
`EventSetDescriptor(String eventSetName, Class<?> listenerType, MethodDescriptor[] listenerMethodDescriptors, Method addListenerMethod, Method removeListenerMethod)`
Creates an `EventSetDescriptor` from scratch using `java.lang.reflect.MethodDescriptor` and `java.lang.Class` objects.
``
`EventSetDescriptor(String eventSetName, Class<?> listenerType, Method[] listenerMethods, Method addListenerMethod, Method removeListenerMethod)`
Creates an `EventSetDescriptor` from scratch using `java.lang.reflect.Method` and `java.lang.Class` objects.
``
`EventSetDescriptor(String eventSetName, Class<?> listenerType, Method[] listenerMethods, Method addListenerMethod, Method removeListenerMethod, Method getListenerMethod)`
This constructor creates an EventSetDescriptor from scratch using java.lang.reflect.Method and java.lang.Class objects.
``
`IndexedPropertyDescriptor(String propertyName, Class<?> beanClass)`
This constructor constructs an IndexedPropertyDescriptor for a property that follows the standard Java conventions by having getFoo and setFoo accessor methods, for both indexed access and array access.
``
`IndexedPropertyDescriptor(String propertyName, Class<?> beanClass, String readMethodName, String writeMethodName, String indexedReadMethodName, String indexedWriteMethodName)`
This constructor takes the name of a simple property, and method names for reading and writing the property, both indexed and non-indexed.
``
`PropertyDescriptor(String propertyName, Class<?> beanClass)`
Constructs a PropertyDescriptor for a property that follows the standard Java convention by having getFoo and setFoo accessor methods.
``
`PropertyDescriptor(String propertyName, Class<?> beanClass, String readMethodName, String writeMethodName)`
This constructor takes the name of a simple property, and method names for reading and writing the property.

## Uses of Class in java.beans.beancontext

Fields in java.beans.beancontext declared as Class
Modifier and Type
Field
Description
`protected Class<?>`
BeanContextServiceAvailableEvent.`serviceClass`
A `Class` reference to the newly available service
`protected Class<?>`
BeanContextServiceRevokedEvent.`serviceClass`
A `Class` reference to the service that is being revoked.
Methods in java.beans.beancontext that return Class
Modifier and Type
Method
Description
`Class<?>`
BeanContextServiceAvailableEvent.`getServiceClass()`
Gets the service class that is the subject of this notification.
`Class<?>`
BeanContextServiceRevokedEvent.`getServiceClass()`
Gets the service class that is the subject of this notification
Methods in java.beans.beancontext with parameters of type Class
Modifier and Type
Method
Description
`boolean`
BeanContextServices.`addService(Class<?> serviceClass, BeanContextServiceProvider serviceProvider)`
Adds a service to this BeanContext.
`boolean`
BeanContextServicesSupport.`addService(Class<?> serviceClass, BeanContextServiceProvider bcsp)`
add a service
`protected boolean`
BeanContextServicesSupport.`addService(Class<?> serviceClass, BeanContextServiceProvider bcsp, boolean fireEvent)`
add a service
`protected static final boolean`
BeanContextSupport.`classEquals(Class<?> first, Class<?> second)`
Tests to see if two class objects, or their names are equal.
`protected BeanContextServicesSupport.BCSSServiceProvider`
BeanContextServicesSupport.`createBCSSServiceProvider(Class<?> sc, BeanContextServiceProvider bcsp)`
subclasses can override this method to create new subclasses of BCSSServiceProvider without having to override addService() in order to instantiate.
`protected final void`
BeanContextServicesSupport.`fireServiceAdded(Class<?> serviceClass)`
Fires a `BeanContextServiceEvent` notifying of a new service.
`protected final void`
BeanContextServicesSupport.`fireServiceRevoked(Class<?> serviceClass, boolean revokeNow)`
Fires a `BeanContextServiceRevokedEvent` indicating that a particular service is no longer available.
`Iterator<?>`
BeanContextServiceProvider.`getCurrentServiceSelectors(BeanContextServices bcs, Class<?> serviceClass)`
Invoked by `BeanContextServices`, this method gets the current service selectors for the specified service.
`Iterator<?>`
BeanContextServices.`getCurrentServiceSelectors(Class<?> serviceClass)`
Gets the list of service dependent service parameters (Service Selectors) for the specified service, by calling getCurrentServiceSelectors() on the underlying BeanContextServiceProvider.
`Iterator<?>`
BeanContextServicesSupport.BCSSProxyServiceProvider.`getCurrentServiceSelectors(BeanContextServices bcs, Class<?> serviceClass)`
`Iterator<?>`
BeanContextServicesSupport.`getCurrentServiceSelectors(Class<?> serviceClass)`
`Object`
BeanContextServiceProvider.`getService(BeanContextServices bcs, Object requestor, Class<?> serviceClass, Object serviceSelector)`
Invoked by `BeanContextServices`, this method requests an instance of a service from this `BeanContextServiceProvider`.
`Object`
BeanContextServices.`getService(BeanContextChild child, Object requestor, Class<?> serviceClass, Object serviceSelector, BeanContextServiceRevokedListener bcsrl)`
A `BeanContextChild`, or any arbitrary object associated with a `BeanContextChild`, may obtain a reference to a currently registered service from its nesting `BeanContextServices` via invocation of this method.
`Object`
BeanContextServicesSupport.BCSSProxyServiceProvider.`getService(BeanContextServices bcs, Object requestor, Class<?> serviceClass, Object serviceSelector)`
`Object`
BeanContextServicesSupport.`getService(BeanContextChild child, Object requestor, Class<?> serviceClass, Object serviceSelector, BeanContextServiceRevokedListener bcsrl)`
obtain a service which may be delegated
`boolean`
BeanContextServices.`hasService(Class<?> serviceClass)`
Reports whether or not a given service is currently available from this context.
`boolean`
BeanContextServicesSupport.`hasService(Class<?> serviceClass)`
has a service, which may be delegated
`boolean`
BeanContextServiceRevokedEvent.`isServiceClass(Class<?> service)`
Checks this event to determine whether or not the service being revoked is of a particular class.
`void`
BeanContextServices.`revokeService(Class<?> serviceClass, BeanContextServiceProvider serviceProvider, boolean revokeCurrentServicesNow)`
BeanContextServiceProviders wishing to remove a currently registered service from this context may do so via invocation of this method.
`void`
BeanContextServicesSupport.`revokeService(Class<?> serviceClass, BeanContextServiceProvider bcsp, boolean revokeCurrentServicesNow)`
remove a service
Constructors in java.beans.beancontext with parameters of type Class
Modifier
Constructor
Description
``
`BeanContextServiceAvailableEvent(BeanContextServices bcs, Class<?> sc)`
Construct a `BeanContextAvailableServiceEvent`.
``
`BeanContextServiceRevokedEvent(BeanContextServices bcs, Class<?> sc, boolean invalidate)`
Construct a `BeanContextServiceEvent`.

## Uses of Class in java.io

Methods in java.io that return Class
Modifier and Type
Method
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.
`Class<?>`
ObjectInputFilter.FilterInfo.`serialClass()`
The class of an object being deserialized.
Methods in java.io with parameters of type Class
Modifier and Type
Method
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`.
Method parameters in java.io with type arguments of type Class
Modifier and Type
Method
Description
`static ObjectInputFilter`
ObjectInputFilter.`allowFilter(Predicate<Class<?>> predicate, ObjectInputFilter.Status otherStatus)`
Returns a filter that returns `Status.ALLOWED` if the predicate on the class is `true`.
`static ObjectInputFilter`
ObjectInputFilter.`rejectFilter(Predicate<Class<?>> predicate, ObjectInputFilter.Status otherStatus)`
Returns a filter that returns `Status.REJECTED` if the predicate on the class is `true`.
Constructors in java.io with parameters of type Class
Modifier
Constructor
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
Description
`static final Class<Boolean>`
Boolean.`TYPE`
The Class object representing the primitive type boolean.
`static final Class<Byte>`
Byte.`TYPE`
The `Class` instance representing the primitive type `byte`.
`static final Class<Character>`
Character.`TYPE`
The `Class` instance representing the primitive type `char`.
`static final Class<Double>`
Double.`TYPE`
The `Class` instance representing the primitive type `double`.
`static final Class<Float>`
Float.`TYPE`
The `Class` instance representing the primitive type `float`.
`static final Class<Integer>`
Integer.`TYPE`
The `Class` instance representing the primitive type `int`.
`static final Class<Long>`
Long.`TYPE`
The `Class` instance representing the primitive type `long`.
`static final Class<Short>`
Short.`TYPE`
The `Class` instance representing the primitive type `short`.
`static final Class<Void>`
Void.`TYPE`
The `Class` object representing the pseudo-type corresponding to the keyword `void`.
Methods in java.lang that return Class
Modifier and Type
Method
Description
`Class<?>`
Class.`arrayType()`
Returns a `Class` for an array type whose component type is described by this Class.
`<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.
`Class<?>`
Class.`componentType()`
Returns the component type of this `Class`, if it describes an array type, or `null` otherwise.
`protected final Class<?>`
ClassLoader.`defineClass(byte[] b, int off, int len)`
Deprecated.
Replaced by `defineClass(String, byte[], int, int)`
`protected final Class<?>`
ClassLoader.`defineClass(String name, byte[] b, int off, int len)`
Converts an array of bytes into an instance of class `Class`.
`protected final Class<?>`
ClassLoader.`defineClass(String name, byte[] b, int off, int len, ProtectionDomain protectionDomain)`
Converts an array of bytes into an instance of class `Class`, with a given `ProtectionDomain`.
`protected final Class<?>`
ClassLoader.`defineClass(String name, ByteBuffer b, ProtectionDomain protectionDomain)`
Converts a `ByteBuffer` into an instance of class `Class`, with the given `ProtectionDomain`.
`Class<? extends Enum>`
EnumConstantNotPresentException.`enumType()`
Returns the type of the missing enum constant.
`protected Class<?>`
ClassLoader.`findClass(String name)`
Finds the class with the specified binary name.
`protected Class<?>`
ClassLoader.`findClass(String moduleName, String name)`
Finds the class with the given binary name in a module defined to this class loader.
`protected final 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.
`protected final Class<?>`
ClassLoader.`findSystemClass(String name)`
Finds a class with the specified binary name, loading it if necessary.
`static Class<?>`
Class.`forName(Module module, String name)`
Returns the `Class` with the given binary name in the given module.
`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<?>`
StackWalker.`getCallerClass()`
Gets the `Class` object of the caller who invoked the method that invoked `getCallerClass`.
`final Class<?>`
Object.`getClass()`
Returns the runtime class of this `Object`.
`protected Class<?>[]`
SecurityManager.`getClassContext()`
Deprecated, for removal: This API element is subject to removal in a future version.
Returns the current execution stack as an array of classes.
`Class<?>[]`
Class.`getClasses()`
Returns an array containing `Class` objects representing all the public classes and interfaces that are members of the class represented by this `Class` object.
`Class<?>`
Class.`getComponentType()`
Returns the `Class` representing the component type of an array.
`Class<?>[]`
Class.`getDeclaredClasses()`
Returns an array of `Class` objects reflecting all the classes and interfaces declared as members of the class represented by this `Class` object.
`Class<?>`
Class.`getDeclaringClass()`
If the class or interface represented by this `Class` object is a member of another class, returns the `Class` object representing the class in which it was declared.
`final Class<E>`
Enum.`getDeclaringClass()`
Returns the Class object corresponding to this enum constant's enum type.
`Class<?>`
StackWalker.StackFrame.`getDeclaringClass()`
Gets the declaring `Class` for the method represented by this stack frame.
`Class<?>`
Class.`getEnclosingClass()`
Returns the immediately enclosing class of the underlying class.
`Class<?>[]`
Class.`getInterfaces()`
Returns the interfaces directly implemented by the class or interface represented by this `Class` object.
`Class<?>`
Class.`getNestHost()`
Returns the nest host of the nest to which the class or interface represented by this `Class` object belongs.
`Class<?>[]`
Class.`getNestMembers()`
Returns an array containing `Class` objects representing all the classes and interfaces that are members of the nest to which the class or interface represented by this `Class` object belongs.
`Class<?>[]`
Class.`getPermittedSubclasses()`
Returns an array containing `Class` objects representing the direct subinterfaces or subclasses permitted to extend or implement this class or interface if it is sealed.
`Class<? super T>`
Class.`getSuperclass()`
Returns the `Class` representing the direct 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 that return types with arguments of type Class
Modifier and Type
Method
Description
`TypeVariable<Class<T>>[]`
Class.`getTypeParameters()`
Returns an array of `TypeVariable` objects that represent the type variables declared by the generic declaration represented by this `GenericDeclaration` object, in declaration order.
Methods in java.lang with parameters of type Class
Modifier and Type
Method
Description
`Module`
Module.`addUses(Class<?> service)`
If the caller's module is this module then update this module to add a service dependence on the given service type.
`<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.
`boolean`
Module.`canUse(Class<?> service)`
Indicates if this module has a service dependence on the given service type.
`static boolean`
Compiler.`compileClass(Class<?> clazz)`
Deprecated, for removal: This API element is subject to removal in a future version.
Compiles the specified class.
`protected abstract T`
ClassValue.`computeValue(Class<?> type)`
Computes the given class's derived value for this `ClassValue`.
`T`
ClassValue.`get(Class<?> type)`
Returns the value for the given class.
`<A extends Annotation>
A`
Class.`getAnnotation(Class<A> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is present, else null.
`<T extends Annotation>
T`
Module.`getAnnotation(Class<T> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is present, else null.
`<A extends Annotation>
A`
Package.`getAnnotation(Class<A> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is present, else null.
`<A extends Annotation>
A[]`
Class.`getAnnotationsByType(Class<A> annotationClass)`
Returns annotations that are associated with this element.
`<A extends Annotation>
A[]`
Package.`getAnnotationsByType(Class<A> annotationClass)`
Returns annotations that are associated with this element.
`Constructor<T>`
Class.`getConstructor(Class<?>... parameterTypes)`
Returns a `Constructor` object that reflects the specified public constructor of the class represented by this `Class` object.
`<A extends Annotation>
A`
Class.`getDeclaredAnnotation(Class<A> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is directly present, else null.
`<A extends Annotation>
A`
Package.`getDeclaredAnnotation(Class<A> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is directly present, else null.
`<A extends Annotation>
A[]`
Class.`getDeclaredAnnotationsByType(Class<A> annotationClass)`
Returns this element's annotation(s) for the specified type if such annotations are either directly present or indirectly present.
`<A extends Annotation>
A[]`
Package.`getDeclaredAnnotationsByType(Class<A> annotationClass)`
`Constructor<T>`
Class.`getDeclaredConstructor(Class<?>... parameterTypes)`
Returns a `Constructor` object that reflects the specified constructor of the class or interface represented by this `Class` object.
`Method`
Class.`getDeclaredMethod(String name, Class<?>... parameterTypes)`
Returns a `Method` object that reflects the specified declared method of the class or interface represented by this `Class` object.
`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)`
Returns true if an annotation for the specified type is present on this element, else false.
`boolean`
Package.`isAnnotationPresent(Class<? extends Annotation> annotationClass)`
Returns true if an annotation for the specified type is present on this element, else false.
`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.
`boolean`
Class.`isNestmateOf(Class<?> c)`
Determines if the given `Class` is a nestmate of the class or interface represented by this `Class` object.
`void`
ClassValue.`remove(Class<?> type)`
Removes the associated value for the given class.
`protected final void`
ClassLoader.`resolveClass(Class<?> c)`
Links the specified class.
`protected final void`
ClassLoader.`setSigners(Class<?> c, Object[] signers)`
Sets the signers of a class.
`static <T extends Enum<T>>
T`
Enum.`valueOf(Class<T> enumClass, String name)`
Returns the enum constant of the specified enum class with the specified name.
Constructors in java.lang with parameters of type Class
Modifier
Constructor
Description
``
`EnumConstantNotPresentException(Class<? extends Enum> enumType, String constantName)`
Constructs an `EnumConstantNotPresentException` for the specified constant.

## Uses of Class in java.lang.annotation

Methods in java.lang.annotation that return Class
Modifier and Type
Method
Description
`Class<? extends Annotation>`
Annotation.`annotationType()`
Returns the annotation interface of this annotation.
`Class<? extends Annotation>`
IncompleteAnnotationException.`annotationType()`
Returns the Class object for the annotation interface with the missing element.
Constructors in java.lang.annotation with parameters of type Class
Modifier
Constructor
Description
``
`IncompleteAnnotationException(Class<? extends Annotation> annotationType, String elementName)`
Constructs an IncompleteAnnotationException to indicate that the named element was missing from the specified annotation interface.

## Uses of Class in java.lang.instrument

Methods in java.lang.instrument that return Class
Modifier and Type
Method
Description
`Class[]`
Instrumentation.`getAllLoadedClasses()`
Returns an array of all classes currently loaded by the JVM.
`Class<?>`
ClassDefinition.`getDefinitionClass()`
Returns the class.
`Class[]`
Instrumentation.`getInitiatedClasses(ClassLoader loader)`
Returns an array of all classes which `loader` can find by name via `ClassLoader::loadClass`, `Class::forName` and bytecode linkage.
Methods in java.lang.instrument with parameters of type Class
Modifier and Type
Method
Description
`boolean`
Instrumentation.`isModifiableClass(Class<?> theClass)`
Tests whether a class is modifiable by retransformation or redefinition.
`void`
Instrumentation.`retransformClasses(Class<?>... classes)`
Retransform the supplied set of classes.
`default byte[]`
ClassFileTransformer.`transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer)`
Transforms the given class file and returns a new replacement class file.
`default byte[]`
ClassFileTransformer.`transform(Module module, ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer)`
Transforms the given class file and returns a new replacement class file.
Constructors in java.lang.instrument with parameters of type Class
Modifier
Constructor
Description
``
`ClassDefinition(Class<?> theClass, byte[] theClassFile)`
Creates a new `ClassDefinition` binding using the supplied class and class file bytes.

## Uses of Class in java.lang.invoke

Methods in java.lang.invoke that return Class
Modifier and Type
Method
Description
`Class<?>`
MethodHandles.Lookup.`accessClass(Class<?> targetClass)`
Determines if a class can be accessed from the lookup context defined by this `Lookup` object.
`Class<?>`
MethodHandles.Lookup.`defineClass(byte[] bytes)`
Creates and links a class or interface from `bytes` with the same class loader and in the same runtime package and protection domain as this lookup's lookup class as if calling `ClassLoader::defineClass`.
`Class<?>`
MethodHandles.Lookup.`ensureInitialized(Class<?> targetClass)`
Ensures that `targetClass` has been initialized.
`Class<?>`
MethodHandles.Lookup.`findClass(String targetName)`
Looks up a class by name from the lookup context defined by this `Lookup` object, as if resolved by an `ldc` instruction.
`Class<?>`
MethodHandleInfo.`getDeclaringClass()`
Returns the class in which the cracked method handle's underlying member was defined.
`Class<?>`
MethodType.`lastParameterType()`
Returns the last parameter type of this method type.
`Class<?>`
MethodHandles.Lookup.`lookupClass()`
Tells which class is performing the lookup.
`Class<?>[]`
MethodType.`parameterArray()`
Presents the parameter types as an array (a convenience method).
`Class<?>`
MethodType.`parameterType(int num)`
Returns the parameter type at the specified index, within this method type.
`Class<?>`
MethodHandles.Lookup.`previousLookupClass()`
Reports a lookup class in another module that this lookup object was previously teleported from, or `null`.
`static Class<?>`
ConstantBootstraps.`primitiveClass(MethodHandles.Lookup lookup, String name, Class<?> type)`
Returns a `Class` mirror for the primitive type whose type descriptor is specified by `name`.
`Class<?>`
MethodType.`returnType()`
Returns the return type of this method type.
`Class<?>`
VarHandle.`varType()`
Returns the variable type of variables referenced by this VarHandle.
`static Class<?>`
MethodHandleProxies.`wrapperInstanceType(Object x)`
Recovers the unique single-method interface type for which this wrapper instance was created.
Methods in java.lang.invoke that return types with arguments of type Class
Modifier and Type
Method
Description
`List<Class<?>>`
VarHandle.`coordinateTypes()`
Returns the coordinate types for this VarHandle.
`List<Class<?>>`
MethodType.`parameterList()`
Presents the parameter types as a list (a convenience method).
Methods in java.lang.invoke with parameters of type Class
Modifier and Type
Method
Description
`Class<?>`
MethodHandles.Lookup.`accessClass(Class<?> targetClass)`
Determines if a class can be accessed from the lookup context defined by this `Lookup` object.
`MethodType`
MethodType.`appendParameterTypes(Class<?>... ptypesToInsert)`
Finds or creates a method type with additional parameter types.
`static MethodHandle`
MethodHandles.`arrayConstructor(Class<?> arrayClass)`
Produces a method handle constructing arrays of a desired type, as if by the `anewarray` bytecode.
`static MethodHandle`
MethodHandles.`arrayElementGetter(Class<?> arrayClass)`
Produces a method handle giving read access to elements of an array, as if by the `aaload` bytecode.
`static MethodHandle`
MethodHandles.`arrayElementSetter(Class<?> arrayClass)`
Produces a method handle giving write access to elements of an array, as if by the `astore` bytecode.
`static VarHandle`
MethodHandles.`arrayElementVarHandle(Class<?> arrayClass)`
Produces a VarHandle giving access to elements of an array of type `arrayClass`.
`static MethodHandle`
MethodHandles.`arrayLength(Class<?> arrayClass)`
Produces a method handle returning the length of an array, as if by the `arraylength` bytecode.
`static VarHandle`
ConstantBootstraps.`arrayVarHandle(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> arrayClass)`
Finds a `VarHandle` for an array type.
`MethodHandle`
MethodHandle.`asCollector(int collectArgPos, Class<?> arrayType, int arrayLength)`
Makes an array-collecting method handle, which accepts a given number of positional arguments starting at a given position, and collects them into an array argument.
`MethodHandle`
MethodHandle.`asCollector(Class<?> arrayType, int arrayLength)`
Makes an array-collecting method handle, which accepts a given number of trailing positional arguments and collects them into an array argument.
`static <T> T`
MethodHandleProxies.`asInterfaceInstance(Class<T> intfc, MethodHandle target)`
Produces an instance of the given single-method interface which redirects its calls to the given method handle.
`MethodHandle`
MethodHandle.`asSpreader(int spreadArgPos, Class<?> arrayType, int arrayLength)`
Makes an array-spreading method handle, which accepts an array argument at a given position and spreads its elements as positional arguments in place of the array.
`MethodHandle`
MethodHandle.`asSpreader(Class<?> arrayType, int arrayLength)`
Makes an array-spreading method handle, which accepts a trailing array argument and spreads its elements as positional arguments.
`MethodHandle`
MethodHandle.`asVarargsCollector(Class<?> arrayType)`
Makes a variable arity adapter which is able to accept any number of trailing positional arguments and collect them into an array argument.
`static VarHandle`
MethodHandles.`byteArrayViewVarHandle(Class<?> viewArrayClass, ByteOrder byteOrder)`
Produces a VarHandle giving access to elements of a `byte[]` array viewed as if it were a different primitive array type, such as `int[]` or `long[]`.
`static VarHandle`
MethodHandles.`byteBufferViewVarHandle(Class<?> viewArrayClass, ByteOrder byteOrder)`
Produces a VarHandle giving access to elements of a `ByteBuffer` viewed as if it were an array of elements of a different primitive component type to that of `byte`, such as `int[]` or `long[]`.
`static MethodHandle`
MethodHandles.`catchException(MethodHandle target, Class<? extends Throwable> exType, MethodHandle handler)`
Makes a method handle which adapts a target method handle, by running it inside an exception handler.
`MethodType`
MethodType.`changeParameterType(int num, Class<?> nptype)`
Finds or creates a method type with a single different parameter type.
`MethodType`
MethodType.`changeReturnType(Class<?> nrtype)`
Finds or creates a method type with a different return type.
`static <T> T`
MethodHandles.`classData(MethodHandles.Lookup caller, String name, Class<T> type)`
Returns the class data associated with the lookup class of the given `caller` lookup object, or `null`.
`static <T> T`
MethodHandles.`classDataAt(MethodHandles.Lookup caller, String name, Class<T> type, int index)`
Returns the element at the specified index in the class data, if the class data associated with the lookup class of the given `caller` lookup object is a `List`.
`static MethodHandle`
MethodHandles.`constant(Class<?> type, Object value)`
Produces a method handle of the requested return type which returns the given constant value every time it is invoked.
`static MethodHandle`
MethodHandles.`dropArguments(MethodHandle target, int pos, Class<?>... valueTypes)`
Produces a method handle which will discard some dummy arguments before calling some other specified target method handle.
`Class<?>`
MethodHandles.Lookup.`ensureInitialized(Class<?> targetClass)`
Ensures that `targetClass` has been initialized.
`static <E extends Enum<E>>
E`
ConstantBootstraps.`enumConstant(MethodHandles.Lookup lookup, String name, Class<E> type)`
Returns an `enum` constant of the type specified by `type` with the name specified by `name`.
`static Object`
ConstantBootstraps.`explicitCast(MethodHandles.Lookup lookup, String name, Class<?> dstType, Object value)`
Applies a conversion from a source type to a destination type.
`static VarHandle`
ConstantBootstraps.`fieldVarHandle(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType)`
Finds a `VarHandle` for an instance field.
`MethodHandle`
MethodHandles.Lookup.`findConstructor(Class<?> refc, MethodType type)`
Produces a method handle which creates an object and initializes it, using the constructor of the specified type.
`MethodHandle`
MethodHandles.Lookup.`findGetter(Class<?> refc, String name, Class<?> type)`
Produces a method handle giving read access to a non-static field.
`MethodHandle`
MethodHandles.Lookup.`findSetter(Class<?> refc, String name, Class<?> type)`
Produces a method handle giving write access to a non-static field.
`MethodHandle`
MethodHandles.Lookup.`findSpecial(Class<?> refc, String name, MethodType type, Class<?> specialCaller)`
Produces an early-bound method handle for a virtual method.
`MethodHandle`
MethodHandles.Lookup.`findStatic(Class<?> refc, String name, MethodType type)`
Produces a method handle for a static method.
`MethodHandle`
MethodHandles.Lookup.`findStaticGetter(Class<?> refc, String name, Class<?> type)`
Produces a method handle giving read access to a static field.
`MethodHandle`
MethodHandles.Lookup.`findStaticSetter(Class<?> refc, String name, Class<?> type)`
Produces a method handle giving write access to a static field.
`VarHandle`
MethodHandles.Lookup.`findStaticVarHandle(Class<?> decl, String name, Class<?> type)`
Produces a VarHandle giving access to a static field `name` of type `type` declared in a class of type `decl`.
`VarHandle`
MethodHandles.Lookup.`findVarHandle(Class<?> recv, String name, Class<?> type)`
Produces a VarHandle giving access to a non-static field `name` of type `type` declared in a class of type `recv`.
`MethodHandle`
MethodHandles.Lookup.`findVirtual(Class<?> refc, String name, MethodType type)`
Produces a method handle for a virtual method.
`static Object`
ConstantBootstraps.`getStaticFinal(MethodHandles.Lookup lookup, String name, Class<?> type)`
Returns the value of a static final field declared in the class which is the same as the field's type (or, for primitive-valued fields, declared in the wrapper class.)
`static Object`
ConstantBootstraps.`getStaticFinal(MethodHandles.Lookup lookup, String name, Class<?> type, Class<?> declaringClass)`
Returns the value of a static final field.
`static MethodHandle`
MethodHandles.`identity(Class<?> type)`
Produces a method handle which returns its sole argument when invoked.
`MethodHandles.Lookup`
MethodHandles.Lookup.`in(Class<?> requestedLookupClass)`
Creates a lookup on the specified new lookup class.
`MethodType`
MethodType.`insertParameterTypes(int num, Class<?>... ptypesToInsert)`
Finds or creates a method type with additional parameter types.
`static Object`
ConstantBootstraps.`invoke(MethodHandles.Lookup lookup, String name, Class<?> type, MethodHandle handle, Object... args)`
Returns the result of invoking a method handle with the provided arguments.
`static MethodType`
MethodType.`methodType(Class<?> rtype)`
Finds or creates a method type with the given components.
`static MethodType`
MethodType.`methodType(Class<?> rtype, Class<?> ptype0)`
Finds or creates a method type with the given components.
`static MethodType`
MethodType.`methodType(Class<?> rtype, Class<?>[] ptypes)`
Finds or creates an instance of the given method type.
`static MethodType`
MethodType.`methodType(Class<?> rtype, Class<?> ptype0, Class<?>... ptypes)`
Finds or creates a method type with the given components.
`static MethodType`
MethodType.`methodType(Class<?> rtype, MethodType ptypes)`
Finds or creates a method type with the given components.
`static MethodType`
MethodType.`methodType(Class<?> rtype, List<Class<?>> ptypes)`
Finds or creates a method type with the given components.
`static Object`
ConstantBootstraps.`nullConstant(MethodHandles.Lookup lookup, String name, Class<?> type)`
Returns a `null` object reference for the reference type specified by `type`.
`static Class<?>`
ConstantBootstraps.`primitiveClass(MethodHandles.Lookup lookup, String name, Class<?> type)`
Returns a `Class` mirror for the primitive type whose type descriptor is specified by `name`.
`static MethodHandles.Lookup`
MethodHandles.`privateLookupIn(Class<?> targetClass, MethodHandles.Lookup caller)`
Returns a `lookup` object on a target class to emulate all supported bytecode behaviors, including private access.
`<T extends Member>
T`
MethodHandleInfo.`reflectAs(Class<T> expected, MethodHandles.Lookup lookup)`
Reflects the underlying member as a method, constructor, or field object.
`static <T extends Member>
T`
MethodHandles.`reflectAs(Class<T> expected, MethodHandle target)`
Performs an unchecked "crack" of a direct method handle.
`static VarHandle`
ConstantBootstraps.`staticFieldVarHandle(MethodHandles.Lookup lookup, String name, Class<VarHandle> type, Class<?> declaringClass, Class<?> fieldType)`
Finds a `VarHandle` for a static field.
`static MethodHandle`
MethodHandles.`throwException(Class<?> returnType, Class<? extends Throwable> exType)`
Produces a method handle which will throw exceptions of the given `exType`.
`static String`
MethodHandleInfo.`toString(int kind, Class<?> defc, String name, MethodType type)`
Returns a string representation for a `MethodHandleInfo`, given the four parts of its symbolic reference.
`MethodHandle`
MethodHandles.Lookup.`unreflectSpecial(Method m, Class<?> specialCaller)`
Produces a method handle for a reflected method.
`static MethodHandle`
MethodHandles.`zero(Class<?> type)`
Produces a constant method handle of the requested return type which returns the default value for that type every time it is invoked.
Method parameters in java.lang.invoke with type arguments of type Class
Modifier and Type
Method
Description
`MethodType`
MethodType.`appendParameterTypes(List<Class<?>> ptypesToInsert)`
Finds or creates a method type with additional parameter types.
`static MethodHandle`
MethodHandles.`dropArguments(MethodHandle target, int pos, List<Class<?>> valueTypes)`
Produces a method handle which will discard some dummy arguments before calling some other specified target method handle.
`static MethodHandle`
MethodHandles.`dropArgumentsToMatch(MethodHandle target, int skip, List<Class<?>> newTypes, int pos)`
Adapts a target method handle to match the given parameter type list.
`MethodType`
MethodType.`insertParameterTypes(int num, List<Class<?>> ptypesToInsert)`
Finds or creates a method type with additional parameter types.
`static MethodType`
MethodType.`methodType(Class<?> rtype, List<Class<?>> ptypes)`
Finds or creates a method type with the given components.
Constructors in java.lang.invoke with parameters of type Class
Modifier
Constructor
Description
``
`SerializedLambda(Class<?> capturingClass, String functionalInterfaceClass, String functionalInterfaceMethodName, String functionalInterfaceMethodSignature, int implMethodKind, String implClass, String implMethodName, String implMethodSignature, String instantiatedMethodType, Object[] capturedArgs)`
Create a `SerializedLambda` from the low-level information present at the lambda factory site.

## Uses of Class in java.lang.management

Methods in java.lang.management that return types with arguments of type Class
Modifier and Type
Method
Description
`static Set<Class<? extends PlatformManagedObject>>`
ManagementFactory.`getPlatformManagementInterfaces()`
Returns the set of `Class` objects, subinterface of `PlatformManagedObject`, representing all management interfaces for monitoring and managing the Java platform.
Methods in java.lang.management with parameters of type Class
Modifier and Type
Method
Description
`static <T extends PlatformManagedObject>
T`
ManagementFactory.`getPlatformMXBean(Class<T> mxbeanInterface)`
Returns the platform MXBean implementing the given `mxbeanInterface` which is specified to have one single instance in the Java virtual machine.
`static <T extends PlatformManagedObject>
T`
ManagementFactory.`getPlatformMXBean(MBeanServerConnection connection, Class<T> mxbeanInterface)`
Returns the platform MXBean proxy for `mxbeanInterface` which is specified to have one single instance in a Java virtual machine and the proxy will forward the method calls through the given `MBeanServerConnection`.
`static <T extends PlatformManagedObject>
List<T>`
ManagementFactory.`getPlatformMXBeans(Class<T> mxbeanInterface)`
Returns the list of platform MXBeans implementing the given `mxbeanInterface` in the Java virtual machine.
`static <T extends PlatformManagedObject>
List<T>`
ManagementFactory.`getPlatformMXBeans(MBeanServerConnection connection, Class<T> mxbeanInterface)`
Returns the list of the platform MXBean proxies for forwarding the method calls of the `mxbeanInterface` through the given `MBeanServerConnection`.
`static <T> T`
ManagementFactory.`newPlatformMXBeanProxy(MBeanServerConnection connection, String mxbeanName, Class<T> mxbeanInterface)`
Returns a proxy for a platform MXBean interface of a given MXBean name that forwards its method calls through the given `MBeanServerConnection`.

## Uses of Class in java.lang.reflect

Methods in java.lang.reflect that return Class
Modifier and Type
Method
Description
`Class<T>`
Constructor.`getDeclaringClass()`
Returns the `Class` object representing the class that declares the constructor represented by this object.
`abstract Class<?>`
Executable.`getDeclaringClass()`
Returns the `Class` object representing the class or interface that declares the executable represented by this object.
`Class<?>`
Field.`getDeclaringClass()`
Returns the `Class` object representing the class or interface that declares the field represented by this `Field` object.
`Class<?>`
Member.`getDeclaringClass()`
Returns the Class object representing the class or interface that declares the member or constructor represented by this Member.
`Class<?>`
Method.`getDeclaringClass()`
Returns the `Class` object representing the class or interface that declares the method represented by this object.
`Class<?>`
RecordComponent.`getDeclaringRecord()`
Returns the record class which declares this record component.
`Class<?>[]`
Constructor.`getExceptionTypes()`
Returns an array of `Class` objects that represent the types of exceptions declared to be thrown by the underlying executable represented by this object.
`abstract Class<?>[]`
Executable.`getExceptionTypes()`
Returns an array of `Class` objects that represent the types of exceptions declared to be thrown by the underlying executable represented by this object.
`Class<?>[]`
Method.`getExceptionTypes()`
Returns an array of `Class` objects that represent the types of exceptions declared to be thrown by the underlying executable represented by this object.
`Class<?>[]`
Constructor.`getParameterTypes()`
Returns an array of `Class` objects that represent the formal parameter types, in declaration order, of the executable represented by this object.
`abstract Class<?>[]`
Executable.`getParameterTypes()`
Returns an array of `Class` objects that represent the formal parameter types, in declaration order, of the executable represented by this object.
`Class<?>[]`
Method.`getParameterTypes()`
Returns an array of `Class` objects that represent the formal parameter types, in declaration order, of the executable represented by this object.
`static Class<?>`
Proxy.`getProxyClass(ClassLoader loader, Class<?>... interfaces)`
Deprecated.
Proxy classes generated in a named module are encapsulated and not accessible to code outside its module.
`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.
`Class<?>`
Parameter.`getType()`
Returns a `Class` object that identifies the declared type for the parameter represented by this `Parameter` object.
`Class<?>`
RecordComponent.`getType()`
Returns a `Class` that identifies the declared type for this record component.
Methods in java.lang.reflect with parameters of type Class
Modifier and Type
Method
Description
`<T extends Annotation>
T`
AccessibleObject.`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`
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`
AnnotatedType.`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`
Constructor.`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`
Executable.`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`
Field.`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`
Method.`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`
Parameter.`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`
RecordComponent.`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.`getAnnotationsByType(Class<T> annotationClass)`
Returns annotations that are associated with this element.
`default <T extends Annotation>
T[]`
AnnotatedElement.`getAnnotationsByType(Class<T> annotationClass)`
Returns annotations that are associated with this element.
`<T extends Annotation>
T[]`
Executable.`getAnnotationsByType(Class<T> annotationClass)`
Returns annotations that are associated with this element.
`<T extends Annotation>
T[]`
Field.`getAnnotationsByType(Class<T> annotationClass)`
Returns annotations that are associated with this element.
`<T extends Annotation>
T[]`
Parameter.`getAnnotationsByType(Class<T> annotationClass)`
Returns annotations that are associated with this element.
`<T extends Annotation>
T`
AccessibleObject.`getDeclaredAnnotation(Class<T> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is directly present, else null.
`default <T extends Annotation>
T`
AnnotatedElement.`getDeclaredAnnotation(Class<T> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is directly present, else null.
`<T extends Annotation>
T`
Parameter.`getDeclaredAnnotation(Class<T> annotationClass)`
Returns this element's annotation for the specified type if such an annotation is directly present, else null.
`<T extends Annotation>
T[]`
AccessibleObject.`getDeclaredAnnotationsByType(Class<T> annotationClass)`
Returns this element's annotation(s) for the specified type if such annotations are either directly present or indirectly present.
`default <T extends Annotation>
T[]`
AnnotatedElement.`getDeclaredAnnotationsByType(Class<T> annotationClass)`
Returns this element's annotation(s) for the specified type if such annotations are either directly present or indirectly present.
`<T extends Annotation>
T[]`
Parameter.`getDeclaredAnnotationsByType(Class<T> annotationClass)`
Returns this element's annotation(s) for the specified type if such annotations are either directly present or indirectly present.
`static Class<?>`
Proxy.`getProxyClass(ClassLoader loader, Class<?>... interfaces)`
Deprecated.
Proxy classes generated in a named module are encapsulated and not accessible to code outside its module.
`boolean`
AccessibleObject.`isAnnotationPresent(Class<? extends Annotation> annotationClass)`
Returns true if an annotation for the specified type is present on this element, else false.
`default boolean`
AnnotatedElement.`isAnnotationPresent(Class<? extends Annotation> annotationClass)`
Returns true if an annotation for the specified type is present on this element, else false.
`static boolean`
Proxy.`isProxyClass(Class<?> cl)`
Returns true if the given class is a proxy class.
`static Object`
Array.`newInstance(Class<?> componentType, int length)`
Creates a new array with the specified component type and length.
`static Object`
Array.`newInstance(Class<?> componentType, int... dimensions)`
Creates a new array with the specified component type and dimensions.
`static Object`
Proxy.`newProxyInstance(ClassLoader loader, Class<?>[] interfaces, InvocationHandler h)`
Returns a proxy instance for the specified interfaces that dispatches method invocations to the specified invocation handler.

## Uses of Class in java.lang.runtime

Methods in java.lang.runtime with parameters of type Class
Modifier and Type
Method
Description
`static Object`
ObjectMethods.`bootstrap(MethodHandles.Lookup lookup, String methodName, TypeDescriptor type, Class<?> recordClass, String names, MethodHandle... getters)`
Bootstrap method to generate the `Object.equals(Object)`, `Object.hashCode()`, and `Object.toString()` methods, based on a description of the component names and accessor methods, for either `invokedynamic` call sites or dynamic constant pool entries.

## Uses of Class in java.net

Methods in java.net that return Class
Modifier and Type
Method
Description
`protected Class<?>`
URLClassLoader.`findClass(String name)`
Finds and loads the class with the specified name from the URL search path.
`Class<T>`
SocketOption.`type()`
Returns the type of the socket option value.
Methods in java.net with parameters of type Class
Modifier and Type
Method
Description
`Object`
ContentHandler.`getContent(URLConnection urlc, Class[] classes)`
Given a URL connect stream positioned at the beginning of the representation of an object, this method reads that stream and creates an object that matches one of the types specified.
`final Object`
URL.`getContent(Class<?>[] classes)`
Gets the contents of this URL.
`Object`
URLConnection.`getContent(Class<?>[] classes)`
Retrieves the contents of this URL connection.

## Uses of Class in java.nio.file

Methods in java.nio.file that return Class
Modifier and Type
Method
Description
`Class<T>`
WatchEvent.Kind.`type()`
Returns the type of the `context` value.
Methods in java.nio.file with parameters of type Class
Modifier and Type
Method
Description
`static <V extends FileAttributeView>
V`
Files.`getFileAttributeView(Path path, Class<V> type, LinkOption... options)`
Returns a file attribute view of a given type.
`<V extends FileAttributeView>
V`
SecureDirectoryStream.`getFileAttributeView(Class<V> type)`
Returns a new file attribute view to access the file attributes of this directory.
`<V extends FileAttributeView>
V`
SecureDirectoryStream.`getFileAttributeView(T path, Class<V> type, LinkOption... options)`
Returns a new file attribute view to access the file attributes of a file in this directory.
`abstract <V extends FileStoreAttributeView>
V`
FileStore.`getFileStoreAttributeView(Class<V> type)`
Returns a `FileStoreAttributeView` of the given type.
`static <A extends BasicFileAttributes>
A`
Files.`readAttributes(Path path, Class<A> type, LinkOption... options)`
Reads a file's attributes as a bulk operation.
`abstract boolean`
FileStore.`supportsFileAttributeView(Class<? extends FileAttributeView> type)`
Tells whether or not this file store supports the file attributes identified by the given file attribute view.

## Uses of Class in java.nio.file.spi

Methods in java.nio.file.spi with parameters of type Class
Modifier and Type
Method
Description
`abstract <V extends FileAttributeView>
V`
FileSystemProvider.`getFileAttributeView(Path path, Class<V> type, LinkOption... options)`
Returns a file attribute view of a given type.
`abstract <A extends BasicFileAttributes>
A`
FileSystemProvider.`readAttributes(Path path, Class<A> type, LinkOption... options)`
Reads a file's attributes as a bulk operation.

## Uses of Class in java.rmi.server

Methods in java.rmi.server that return Class
Modifier and Type
Method
Description
`Class<?>`
LoaderHandler.`loadClass(String name)`
Deprecated.
no replacement
`Class<?>`
LoaderHandler.`loadClass(URL codebase, String name)`
Deprecated.
no replacement
`static Class<?>`
RMIClassLoader.`loadClass(String name)`
Deprecated.
replaced by `loadClass(String,String)` method
`static Class<?>`
RMIClassLoader.`loadClass(String codebase, String name)`
Loads a class from a codebase URL path.
`static Class<?>`
RMIClassLoader.`loadClass(String codebase, String name, ClassLoader defaultLoader)`
Loads a class from a codebase URL path, optionally using the supplied loader.
`static Class<?>`
RMIClassLoader.`loadClass(URL codebase, String name)`
Loads a class from a codebase URL.
`abstract Class<?>`
RMIClassLoaderSpi.`loadClass(String codebase, String name, ClassLoader defaultLoader)`
Provides the implementation for `RMIClassLoader.loadClass(URL,String)`, `RMIClassLoader.loadClass(String,String)`, and `RMIClassLoader.loadClass(String,String,ClassLoader)`.
`static Class<?>`
RMIClassLoader.`loadProxyClass(String codebase, String[] interfaces, ClassLoader defaultLoader)`
Loads a dynamic proxy class (see `Proxy`) that implements a set of interfaces with the given names from a codebase URL path.
`abstract Class<?>`
RMIClassLoaderSpi.`loadProxyClass(String codebase, String[] interfaces, ClassLoader defaultLoader)`
Provides the implementation for `RMIClassLoader.loadProxyClass(String,String[],ClassLoader)`.
Methods in java.rmi.server with parameters of type Class
Modifier and Type
Method
Description
`static String`
RMIClassLoader.`getClassAnnotation(Class<?> cl)`
Returns the annotation string (representing a location for the class definition) that RMI will use to annotate the class descriptor when marshalling objects of the given class.
`abstract String`
RMIClassLoaderSpi.`getClassAnnotation(Class<?> cl)`
Provides the implementation for `RMIClassLoader.getClassAnnotation(Class)`.

## Uses of Class in java.security

Methods in java.security that return Class
Modifier and Type
Method
Description
`protected final Class<?>`
SecureClassLoader.`defineClass(String name, byte[] b, int off, int len, CodeSource cs)`
Converts an array of bytes into an instance of class Class, with an optional CodeSource.
`protected final Class<?>`
SecureClassLoader.`defineClass(String name, ByteBuffer b, CodeSource cs)`
Converts a `ByteBuffer` into an instance of class `Class`, with an optional CodeSource.
Methods in java.security with parameters of type Class
Modifier and Type
Method
Description
`boolean`
KeyStoreSpi.`engineEntryInstanceOf(String alias, Class<? extends KeyStore.Entry> entryClass)`
Determines if the keystore `Entry` for the specified `alias` is an instance or subclass of the specified `entryClass`.
`protected abstract <T extends KeySpec>
T`
KeyFactorySpi.`engineGetKeySpec(Key key, Class<T> keySpec)`
Returns a specification (key material) of the given key object.
`protected abstract <T extends AlgorithmParameterSpec>
T`
AlgorithmParametersSpi.`engineGetParameterSpec(Class<T> paramSpec)`
Returns a (transparent) specification of this parameters object.
`final boolean`
KeyStore.`entryInstanceOf(String alias, Class<? extends KeyStore.Entry> entryClass)`
Determines if the keystore `Entry` for the specified `alias` is an instance or subclass of the specified `entryClass`.
`final <T extends KeySpec>
T`
KeyFactory.`getKeySpec(Key key, Class<T> keySpec)`
Returns a specification (key material) of the given key object.
`final <T extends AlgorithmParameterSpec>
T`
AlgorithmParameters.`getParameterSpec(Class<T> paramSpec)`
Returns a (transparent) specification of this parameter object.

## Uses of Class in java.sql

Methods in java.sql that return types with arguments of type Class
Modifier and Type
Method
Description
`Map<String,Class<?>>`
Connection.`getTypeMap()`
Retrieves the `Map` object associated with this `Connection` object.
Methods in java.sql with parameters of type Class
Modifier and Type
Method
Description
`<T> T`
CallableStatement.`getObject(int parameterIndex, Class<T> type)`
Returns an object representing the value of OUT parameter `parameterIndex` and will convert from the SQL type of the parameter to the requested Java data type, if the conversion is supported.
`<T> T`
CallableStatement.`getObject(String parameterName, Class<T> type)`
Returns an object representing the value of OUT parameter `parameterName` and will convert from the SQL type of the parameter to the requested Java data type, if the conversion is supported.
`<T> T`
ResultSet.`getObject(int columnIndex, Class<T> type)`
Retrieves the value of the designated column in the current row of this `ResultSet` object and will convert from the SQL type of the column to the requested Java data type, if the conversion is supported.
`<T> T`
ResultSet.`getObject(String columnLabel, Class<T> type)`
Retrieves the value of the designated column in the current row of this `ResultSet` object and will convert from the SQL type of the column to the requested Java data type, if the conversion is supported.
`<T extends Source>
T`
SQLXML.`getSource(Class<T> sourceClass)`
Returns a Source for reading the XML value designated by this SQLXML instance.
`boolean`
Wrapper.`isWrapperFor(Class<?> iface)`
Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
`default <T> T`
SQLInput.`readObject(Class<T> type)`
Reads the next attribute in the stream and returns it as an `Object` in the Java programming language.
`<T extends Result>
T`
SQLXML.`setResult(Class<T> resultClass)`
Returns a Result for setting the XML value designated by this SQLXML instance.
`<T> T`
Wrapper.`unwrap(Class<T> iface)`
Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.
Method parameters in java.sql with type arguments of type Class
Modifier and Type
Method
Description
`Object`
Array.`getArray(long index, int count, Map<String,Class<?>> map)`
Retrieves a slice of the SQL `ARRAY` value designated by this `Array` object, beginning with the specified `index` and containing up to `count` successive elements of the SQL array.
`Object`
Array.`getArray(Map<String,Class<?>> map)`
Retrieves the contents of the SQL `ARRAY` value designated by this `Array` object.
`Object[]`
Struct.`getAttributes(Map<String,Class<?>> map)`
Produces the ordered values of the attributes of the SQL structured type that this `Struct` object represents.
`Object`
CallableStatement.`getObject(int parameterIndex, Map<String,Class<?>> map)`
Returns an object representing the value of OUT parameter `parameterIndex` and uses `map` for the custom mapping of the parameter value.
`Object`
CallableStatement.`getObject(String parameterName, Map<String,Class<?>> map)`
Returns an object representing the value of OUT parameter `parameterName` and uses `map` for the custom mapping of the parameter value.
`Object`
Ref.`getObject(Map<String,Class<?>> map)`
Retrieves the referenced object and maps it to a Java type using the given type map.
`Object`
ResultSet.`getObject(int columnIndex, Map<String,Class<?>> map)`
Retrieves the value of the designated column in the current row of this `ResultSet` object as an `Object` in the Java programming language.
`Object`
ResultSet.`getObject(String columnLabel, Map<String,Class<?>> map)`
Retrieves the value of the designated column in the current row of this `ResultSet` object as an `Object` in the Java programming language.
`ResultSet`
Array.`getResultSet(long index, int count, Map<String,Class<?>> map)`
Retrieves a result set holding the elements of the subarray that starts at index `index` and contains up to `count` successive elements.
`ResultSet`
Array.`getResultSet(Map<String,Class<?>> map)`
Retrieves a result set that contains the elements of the SQL `ARRAY` value designated by this `Array` object.
`void`
Connection.`setTypeMap(Map<String,Class<?>> map)`
Installs the given `TypeMap` object as the type map for this `Connection` object.

## Uses of Class in java.util

Methods in java.util that return Class
Modifier and Type
Method
Description
`Class<?>`
IllegalFormatConversionException.`getArgumentClass()`
Returns the class of the mismatched argument.
`Class<? extends S>`
ServiceLoader.Provider.`type()`
Returns the provider type.
Methods in java.util with parameters of type Class
Modifier and Type
Method
Description
`static <E extends Enum<E>>
EnumSet<E>`
EnumSet.`allOf(Class<E> elementType)`
Creates an enum set containing all of the elements in the specified element type.
`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> NavigableMap<K,V>`
Collections.`checkedNavigableMap(NavigableMap<K,V> m, Class<K> keyType, Class<V> valueType)`
Returns a dynamically typesafe view of the specified navigable map.
`static <E> NavigableSet<E>`
Collections.`checkedNavigableSet(NavigableSet<E> s, Class<E> type)`
Returns a dynamically typesafe view of the specified navigable set.
`static <E> Queue<E>`
Collections.`checkedQueue(Queue<E> queue, Class<E> type)`
Returns a dynamically typesafe view of the specified queue.
`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 <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.
`static <S> ServiceLoader<S>`
ServiceLoader.`load(ModuleLayer layer, Class<S> service)`
Creates a new service loader for the given service type to load service providers from modules in the given module layer and its ancestors.
`static <S> ServiceLoader<S>`
ServiceLoader.`loadInstalled(Class<S> service)`
Creates a new service loader for the given service type, using the platform class loader.
`static <E extends Enum<E>>
EnumSet<E>`
EnumSet.`noneOf(Class<E> elementType)`
Creates an empty enum set with the specified element type.
Constructors in java.util with parameters of type Class
Modifier
Constructor
Description
``
`EnumMap(Class<K> keyType)`
Creates an empty enum map with the specified key type.
``
`IllegalFormatConversionException(char c, Class<?> arg)`
Constructs an instance of this class with the mismatched conversion and the corresponding argument class.

## Uses of Class in java.util.concurrent.atomic

Methods in java.util.concurrent.atomic with parameters of type Class
Modifier and Type
Method
Description
`static <U> AtomicIntegerFieldUpdater<U>`
AtomicIntegerFieldUpdater.`newUpdater(Class<U> tclass, String fieldName)`
Creates and returns an updater for objects with the given field.
`static <U> AtomicLongFieldUpdater<U>`
AtomicLongFieldUpdater.`newUpdater(Class<U> tclass, String fieldName)`
Creates and returns an updater for objects with the given field.
`static <U, W> AtomicReferenceFieldUpdater<U,W>`
AtomicReferenceFieldUpdater.`newUpdater(Class<U> tclass, Class<W> vclass, String fieldName)`
Creates and returns an updater for objects with the given field.

## Uses of Class in java.util.prefs

Methods in java.util.prefs with parameters of type Class
Modifier and Type
Method
Description
`static Preferences`
Preferences.`systemNodeForPackage(Class<?> c)`
Returns the preference node from the system preference tree that is associated (by convention) with the specified class's package.
`static Preferences`
Preferences.`userNodeForPackage(Class<?> c)`
Returns the preference node from the calling user's preference tree that is associated (by convention) with the specified class's package.

## Uses of Class in javax.annotation.processing

Methods in javax.annotation.processing with parameters of type Class
Modifier and Type
Method
Description
`Set<? extends Element>`
RoundEnvironment.`getElementsAnnotatedWith(Class<? extends Annotation> a)`
Returns the elements annotated with the given annotation type.
Method parameters in javax.annotation.processing with type arguments of type Class
Modifier and Type
Method
Description
`default Set<? extends Element>`
RoundEnvironment.`getElementsAnnotatedWithAny(Set<Class<? extends Annotation>> annotations)`
Returns the elements annotated with one or more of the given annotation types.

## Uses of Class in javax.crypto

Methods in javax.crypto with parameters of type Class
Modifier and Type
Method
Description
`protected abstract KeySpec`
SecretKeyFactorySpi.`engineGetKeySpec(SecretKey key, Class<?> keySpec)`
Returns a specification (key material) of the given key object in the requested format.
`final KeySpec`
SecretKeyFactory.`getKeySpec(SecretKey key, Class<?> keySpec)`
Returns a specification (key material) of the given key object in the requested format.

## Uses of Class in javax.imageio.metadata

Methods in javax.imageio.metadata that return Class
Modifier and Type
Method
Description
`Class<?>`
IIOMetadataFormat.`getObjectClass(String elementName)`
Returns the `Class` type of the `Object` reference stored within the element.
`Class<?>`
IIOMetadataFormatImpl.`getObjectClass(String elementName)`
Methods in javax.imageio.metadata with parameters of type Class
Modifier and Type
Method
Description
`protected void`
IIOMetadataFormatImpl.`addObjectValue(String elementName, Class<?> classType, int arrayMinLength, int arrayMaxLength)`
Allows an `Object` reference of a given class type to be stored in nodes implementing the named element.
`protected <T> void`
IIOMetadataFormatImpl.`addObjectValue(String elementName, Class<T> classType, boolean required, T defaultValue)`
Allows an `Object` reference of a given class type to be stored in nodes implementing the named element.
`protected <T> void`
IIOMetadataFormatImpl.`addObjectValue(String elementName, Class<T> classType, boolean required, T defaultValue, List<? extends T> enumeratedValues)`
Allows an `Object` reference of a given class type to be stored in nodes implementing the named element.
`protected <T extends Object & Comparable<? super T>>
void`
IIOMetadataFormatImpl.`addObjectValue(String elementName, Class<T> classType, T defaultValue, Comparable<? super T> minValue, Comparable<? super T> maxValue, boolean minInclusive, boolean maxInclusive)`
Allows an `Object` reference of a given class type to be stored in nodes implementing the named element.

## Uses of Class in javax.imageio.spi

Fields in javax.imageio.spi declared as Class
Modifier and Type
Field
Description
`protected Class<?>`
ImageInputStreamSpi.`inputClass`
A `Class` object indicating the legal object type for use by the `createInputStreamInstance` method.
`protected Class<?>[]`
ImageReaderSpi.`inputTypes`
An array of `Class` objects to be returned from `getInputTypes`, initially `null`.
`protected Class<?>`
ImageOutputStreamSpi.`outputClass`
A `Class` object indicating the legal object type for use by the `createInputStreamInstance` method.
`protected Class<?>[]`
ImageWriterSpi.`outputTypes`
An array of `Class` objects to be returned from `getOutputTypes`, initially `null`.
`static final Class<?>[]`
ImageReaderSpi.`STANDARD_INPUT_TYPE`
Deprecated.
Instead of using this field, directly create the equivalent array `{ ImageInputStream.class }`.
`static final Class<?>[]`
ImageWriterSpi.`STANDARD_OUTPUT_TYPE`
Deprecated.
Instead of using this field, directly create the equivalent array `{ ImageOutputStream.class }`.
Methods in javax.imageio.spi that return Class
Modifier and Type
Method
Description
`Class<?>`
ImageInputStreamSpi.`getInputClass()`
Returns a `Class` object representing the class or interface type that must be implemented by an input source in order to be "wrapped" in an `ImageInputStream` via the `createInputStreamInstance` method.
`Class<?>[]`
ImageReaderSpi.`getInputTypes()`
Returns an array of `Class` objects indicating what types of objects may be used as arguments to the reader's `setInput` method.
`Class<?>`
ImageOutputStreamSpi.`getOutputClass()`
Returns a `Class` object representing the class or interface type that must be implemented by an output destination in order to be "wrapped" in an `ImageOutputStream` via the `createOutputStreamInstance` method.
`Class<?>[]`
ImageWriterSpi.`getOutputTypes()`
Returns an array of `Class` objects indicating what types of objects may be used as arguments to the writer's `setOutput` method.
Methods in javax.imageio.spi that return types with arguments of type Class
Modifier and Type
Method
Description
`Iterator<Class<?>>`
ServiceRegistry.`getCategories()`
Returns an `Iterator` of `Class` objects indicating the current set of categories.
Methods in javax.imageio.spi with parameters of type Class
Modifier and Type
Method
Description
`void`
ServiceRegistry.`deregisterAll(Class<?> category)`
Deregisters all service provider object currently registered under the given category.
`<T> boolean`
ServiceRegistry.`deregisterServiceProvider(T provider, Class<T> category)`
Removes a service provider object from the given category.
`<T> T`
ServiceRegistry.`getServiceProviderByClass(Class<T> providerClass)`
Returns the currently registered service provider object that is of the given class type.
`<T> Iterator<T>`
ServiceRegistry.`getServiceProviders(Class<T> category, boolean useOrdering)`
Returns an `Iterator` containing all registered service providers in the given category.
`<T> Iterator<T>`
ServiceRegistry.`getServiceProviders(Class<T> category, ServiceRegistry.Filter filter, boolean useOrdering)`
Returns an `Iterator` containing service provider objects within a given category that satisfy a criterion imposed by the supplied `ServiceRegistry.Filter` object's `filter` method.
`static <T> Iterator<T>`
ServiceRegistry.`lookupProviders(Class<T> providerClass)`
Locates and incrementally instantiates the available providers of a given service using the context class loader.
`static <T> Iterator<T>`
ServiceRegistry.`lookupProviders(Class<T> providerClass, ClassLoader loader)`
Searches for implementations of a particular service class using the given class loader.
`void`
IIOServiceProvider.`onDeregistration(ServiceRegistry registry, Class<?> category)`
A callback that will be whenever the Spi class has been deregistered from a `ServiceRegistry`.
`void`
RegisterableService.`onDeregistration(ServiceRegistry registry, Class<?> category)`
Called when an object implementing this interface is removed from the given `category` of the given `registry`.
`void`
IIOServiceProvider.`onRegistration(ServiceRegistry registry, Class<?> category)`
A callback that will be called exactly once after the Spi class has been instantiated and registered in a `ServiceRegistry`.
`void`
RegisterableService.`onRegistration(ServiceRegistry registry, Class<?> category)`
Called when an object implementing this interface is added to the given `category` of the given `registry`.
`<T> boolean`
ServiceRegistry.`registerServiceProvider(T provider, Class<T> category)`
Adds a service provider object to the registry.
`<T> boolean`
ServiceRegistry.`setOrdering(Class<T> category, T firstProvider, T secondProvider)`
Sets a pairwise ordering between two service provider objects within a given category.
`<T> boolean`
ServiceRegistry.`unsetOrdering(Class<T> category, T firstProvider, T secondProvider)`
Sets a pairwise ordering between two service provider objects within a given category.
Constructors in javax.imageio.spi with parameters of type Class
Modifier
Constructor
Description
``
`ImageInputStreamSpi(String vendorName, String version, Class<?> inputClass)`
Constructs an `ImageInputStreamSpi` with a given set of values.
``
`ImageOutputStreamSpi(String vendorName, String version, Class<?> outputClass)`
Constructs an `ImageOutputStreamSpi` with a given set of values.
``
`ImageReaderSpi(String vendorName, String version, String[] names, String[] suffixes, String[] MIMETypes, String readerClassName, Class<?>[] inputTypes, String[] writerSpiNames, boolean supportsStandardStreamMetadataFormat, String nativeStreamMetadataFormatName, String nativeStreamMetadataFormatClassName, String[] extraStreamMetadataFormatNames, String[] extraStreamMetadataFormatClassNames, boolean supportsStandardImageMetadataFormat, String nativeImageMetadataFormatName, String nativeImageMetadataFormatClassName, String[] extraImageMetadataFormatNames, String[] extraImageMetadataFormatClassNames)`
Constructs an `ImageReaderSpi` with a given set of values.
``
`ImageWriterSpi(String vendorName, String version, String[] names, String[] suffixes, String[] MIMETypes, String writerClassName, Class<?>[] outputTypes, String[] readerSpiNames, boolean supportsStandardStreamMetadataFormat, String nativeStreamMetadataFormatName, String nativeStreamMetadataFormatClassName, String[] extraStreamMetadataFormatNames, String[] extraStreamMetadataFormatClassNames, boolean supportsStandardImageMetadataFormat, String nativeImageMetadataFormatName, String nativeImageMetadataFormatClassName, String[] extraImageMetadataFormatNames, String[] extraImageMetadataFormatClassNames)`
Constructs an `ImageWriterSpi` with a given set of values.
Constructor parameters in javax.imageio.spi with type arguments of type Class
Modifier
Constructor
Description
``
`ServiceRegistry(Iterator<Class<?>> categories)`
Constructs a `ServiceRegistry` instance with a set of categories taken from the `categories` argument.

## Uses of Class in javax.lang.model

Methods in javax.lang.model with parameters of type Class
Modifier and Type
Method
Description
`<A extends Annotation>
A`
AnnotatedConstruct.`getAnnotation(Class<A> annotationType)`
Returns this construct's annotation of the specified type if such an annotation is present, else `null`.
`<A extends Annotation>
A[]`
AnnotatedConstruct.`getAnnotationsByType(Class<A> annotationType)`
Returns annotations that are associated with this construct.

## Uses of Class in javax.lang.model.element

Methods in javax.lang.model.element with parameters of type Class
Modifier and Type
Method
Description
`<A extends Annotation>
A`
Element.`getAnnotation(Class<A> annotationType)`
Returns this construct's annotation of the specified type if such an annotation is present, else `null`.
`<A extends Annotation>
A[]`
Element.`getAnnotationsByType(Class<A> annotationType)`
Returns annotations that are associated with this construct.

## Uses of Class in javax.lang.model.type

Methods in javax.lang.model.type with parameters of type Class
Modifier and Type
Method
Description
`<A extends Annotation>
A`
TypeMirror.`getAnnotation(Class<A> annotationType)`
Returns this construct's annotation of the specified type if such an annotation is present, else `null`.
`<A extends Annotation>
A[]`
TypeMirror.`getAnnotationsByType(Class<A> annotationType)`
Returns annotations that are associated with this construct.

## Uses of Class in javax.management

Methods in javax.management that return Class
Modifier and Type
Method
Description
`Class<?>`
StandardMBean.`getImplementationClass()`
Get the class of the implementation of this Standard MBean (or MXBean).
`final Class<?>`
StandardMBean.`getMBeanInterface()`
Get the Management Interface of this Standard MBean (or MXBean).
`static Class<?>`
DefaultLoaderRepository.`loadClass(String className)`
Deprecated.
Go through the list of class loaders and try to load the requested class.
`static Class<?>`
DefaultLoaderRepository.`loadClassWithout(ClassLoader loader, String className)`
Deprecated.
Go through the list of class loaders but exclude the given class loader, then try to load the requested class.
Methods in javax.management with parameters of type Class
Modifier and Type
Method
Description
`static boolean`
JMX.`isMXBeanInterface(Class<?> interfaceClass)`
Test whether an interface is an MXBean interface.
`static <T> T`
JMX.`newMBeanProxy(MBeanServerConnection connection, ObjectName objectName, Class<T> interfaceClass)`
Make a proxy for a Standard MBean in a local or remote MBean Server.
`static <T> T`
JMX.`newMBeanProxy(MBeanServerConnection connection, ObjectName objectName, Class<T> interfaceClass, boolean notificationEmitter)`
Make a proxy for a Standard MBean in a local or remote MBean Server that may also support the methods of `NotificationEmitter`.
`static <T> T`
JMX.`newMXBeanProxy(MBeanServerConnection connection, ObjectName objectName, Class<T> interfaceClass)`
Make a proxy for an MXBean in a local or remote MBean Server.
`static <T> T`
JMX.`newMXBeanProxy(MBeanServerConnection connection, ObjectName objectName, Class<T> interfaceClass, boolean notificationEmitter)`
Make a proxy for an MXBean in a local or remote MBean Server that may also support the methods of `NotificationEmitter`.
`static <T> T`
MBeanServerInvocationHandler.`newProxyInstance(MBeanServerConnection connection, ObjectName objectName, Class<T> interfaceClass, boolean notificationBroadcaster)`
Return a proxy that implements the given interface by forwarding its methods through the given MBean server to the named MBean.
Constructors in javax.management with parameters of type Class
Modifier
Constructor
Description
`protected`
`StandardEmitterMBean(Class<?> mbeanInterface, boolean isMXBean, NotificationEmitter emitter)`
Make an MBean whose management interface is specified by `mbeanInterface`, and where notifications are handled by the given `NotificationEmitter`.
`protected`
`StandardEmitterMBean(Class<?> mbeanInterface, NotificationEmitter emitter)`
Make an MBean whose management interface is specified by `mbeanInterface`, and where notifications are handled by the given `NotificationEmitter`.
``
`StandardEmitterMBean(T implementation, Class<T> mbeanInterface, boolean isMXBean, NotificationEmitter emitter)`
Make an MBean whose management interface is specified by `mbeanInterface`, with the given implementation and where notifications are handled by the given `NotificationEmitter`.
``
`StandardEmitterMBean(T implementation, Class<T> mbeanInterface, NotificationEmitter emitter)`
Make an MBean whose management interface is specified by `mbeanInterface`, with the given implementation and where notifications are handled by the given `NotificationEmitter`.
`protected`
`StandardMBean(Class<?> mbeanInterface)`
Make a DynamicMBean out of this, using the specified mbeanInterface class.
`protected`
`StandardMBean(Class<?> mbeanInterface, boolean isMXBean)`
Make a DynamicMBean out of this, using the specified mbeanInterface class, and choosing whether the resulting MBean is an MXBean.
``
`StandardMBean(T implementation, Class<T> mbeanInterface)`
Make a DynamicMBean out of the object implementation, using the specified mbeanInterface class.
``
`StandardMBean(T implementation, Class<T> mbeanInterface, boolean isMXBean)`
Make a DynamicMBean out of the object implementation, using the specified mbeanInterface class, and choosing whether the resultant MBean is an MXBean.

## Uses of Class in javax.management.loading

Methods in javax.management.loading that return Class
Modifier and Type
Method
Description
`protected Class<?>`
MLet.`findClass(String name)`
This is the main method for class loaders that is being redefined.
`Class<?>`
ClassLoaderRepository.`loadClass(String className)`
Load the given class name through the list of class loaders.
`static Class<?>`
DefaultLoaderRepository.`loadClass(String className)`
Deprecated.
Go through the list of class loaders and try to load the requested class.
`Class<?>`
MLet.`loadClass(String name, ClassLoaderRepository clr)`
Load a class, using the given `ClassLoaderRepository` if the class is not found in this MLet's URLs.
`Class<?>`
ClassLoaderRepository.`loadClassBefore(ClassLoader stop, String className)`
Load the given class name through the list of class loaders, stopping at the given one.
`Class<?>`
ClassLoaderRepository.`loadClassWithout(ClassLoader exclude, String className)`
Load the given class name through the list of class loaders, excluding the given one.
`static Class<?>`
DefaultLoaderRepository.`loadClassWithout(ClassLoader loader, String className)`
Deprecated.
Go through the list of class loaders but exclude the given class loader, then try to load the requested class.

## Uses of Class in javax.management.openmbean

Methods in javax.management.openmbean with parameters of type Class
Modifier and Type
Method
Description
`static <T> ArrayType<T>`
ArrayType.`getPrimitiveArrayType(Class<T> arrayClass)`
Create an `ArrayType` instance in a type-safe manner.

## Uses of Class in javax.naming.spi

Methods in javax.naming.spi with parameters of type Class
Modifier and Type
Method
Description
`ResolveResult`
Resolver.`resolveToClass(String name, Class<? extends Context> contextType)`
Partially resolves a name.
`ResolveResult`
Resolver.`resolveToClass(Name name, Class<? extends Context> contextType)`
Partially resolves a name.

## Uses of Class in javax.print

Methods in javax.print that return Class
Modifier and Type
Method
Description
`Class<?>[]`
PrintService.`getSupportedAttributeCategories()`
Determines the printing attribute categories a client can specify when setting up a job for this print service.
`Class<?>[]`
AttributeException.`getUnsupportedAttributes()`
Returns the array of printing attribute classes for which the Print Service instance does not support the attribute at all, or `null` if there are no such attributes.
Methods in javax.print with parameters of type Class
Modifier and Type
Method
Description
`<T extends PrintServiceAttribute>
T`
PrintService.`getAttribute(Class<T> category)`
Gets the value of the single specified service attribute.
`Object`
PrintService.`getDefaultAttributeValue(Class<? extends Attribute> category)`
Determines this print service's default printing attribute value in the given category.
`Object`
PrintService.`getSupportedAttributeValues(Class<? extends Attribute> category, DocFlavor flavor, AttributeSet attributes)`
Determines the printing attribute values a client can specify in the given category when setting up a job for this print service.
`boolean`
PrintService.`isAttributeCategorySupported(Class<? extends Attribute> category)`
Determines whether a client can specify the given printing attribute category when setting up a job for this print service.

## Uses of Class in javax.print.attribute

Methods in javax.print.attribute that return Class
Modifier and Type
Method
Description
`Class<? extends Attribute>`
Attribute.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value when it is added to an attribute set.
`static Class<?>`
AttributeSetUtilities.`verifyAttributeCategory(Object object, Class<?> interfaceName)`
Verify that the given object is a `Class` that implements the given interface, which is assumed to be interface `Attribute` or a subinterface thereof.
Methods in javax.print.attribute with parameters of type Class
Modifier and Type
Method
Description
`boolean`
AttributeSet.`containsKey(Class<?> category)`
Returns `true` if this attribute set contains an attribute for the specified category.
`boolean`
HashAttributeSet.`containsKey(Class<?> category)`
Returns `true` if this attribute set contains an attribute for the specified category.
`Attribute`
AttributeSet.`get(Class<?> category)`
Returns the attribute value which this attribute set contains in the given attribute category.
`Attribute`
HashAttributeSet.`get(Class<?> category)`
Returns the attribute value which this attribute set contains in the given attribute category.
`boolean`
AttributeSet.`remove(Class<?> category)`
Removes any attribute for this category from this attribute set if present.
`boolean`
HashAttributeSet.`remove(Class<?> category)`
Removes any attribute for this category from this attribute set if present.
`static Class<?>`
AttributeSetUtilities.`verifyAttributeCategory(Object object, Class<?> interfaceName)`
Verify that the given object is a `Class` that implements the given interface, which is assumed to be interface `Attribute` or a subinterface thereof.
`static Attribute`
AttributeSetUtilities.`verifyAttributeValue(Object object, Class<?> interfaceName)`
Verify that the given object is an instance of the given interface, which is assumed to be interface `Attribute` or a subinterface thereof.
`static void`
AttributeSetUtilities.`verifyCategoryForValue(Class<?> category, Attribute attribute)`
Verify that the given attribute category object is equal to the category of the given attribute value object.
Constructors in javax.print.attribute with parameters of type Class
Modifier
Constructor
Description
`protected`
`HashAttributeSet(Class<?> interfaceName)`
Construct a new, empty attribute set, where the members of the attribute set are restricted to the given interface.
`protected`
`HashAttributeSet(Attribute[] attributes, Class<?> interfaceName)`
Construct a new attribute set, where the members of the attribute set are restricted to the given interface.
`protected`
`HashAttributeSet(Attribute attribute, Class<?> interfaceName)`
Construct a new attribute set, initially populated with the given attribute, where the members of the attribute set are restricted to the given interface.
`protected`
`HashAttributeSet(AttributeSet attributes, Class<?> interfaceName)`
Construct a new attribute set, initially populated with the values from the given set where the members of the attribute set are restricted to the given interface.

## Uses of Class in javax.print.attribute.standard

Methods in javax.print.attribute.standard that return Class
Modifier and Type
Method
Description
`final Class<? extends Attribute>`
Chromaticity.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
ColorSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Compression.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Copies.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
CopiesSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
DateTimeAtCompleted.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
DateTimeAtCreation.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
DateTimeAtProcessing.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Destination.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
DialogOwner.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
DialogTypeSelection.`getCategory()`
Gets the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
DocumentName.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Fidelity.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Finishings.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobHoldUntil.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobImpressions.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobImpressionsCompleted.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobImpressionsSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobKOctets.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobKOctetsProcessed.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobKOctetsSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobMediaSheets.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobMediaSheetsCompleted.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobMediaSheetsSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobMessageFromOperator.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobName.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobOriginatingUserName.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobPriority.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobPrioritySupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobSheets.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobState.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobStateReason.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
JobStateReasons.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Media.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
MediaPrintableArea.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
MediaSize.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
MultipleDocumentHandling.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
NumberOfDocuments.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
NumberOfInterveningJobs.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
NumberUp.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
NumberUpSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
OrientationRequested.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
OutputDeviceAssigned.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PageRanges.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PagesPerMinute.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PagesPerMinuteColor.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PDLOverrideSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PresentationDirection.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterInfo.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterIsAcceptingJobs.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterLocation.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterMakeAndModel.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterMessageFromOperator.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterMoreInfo.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterMoreInfoManufacturer.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterName.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterResolution.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterState.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterStateReason.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterStateReasons.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrinterURI.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
PrintQuality.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
QueuedJobCount.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
ReferenceUriSchemesSupported.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
RequestingUserName.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Severity.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
SheetCollate.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.
`final Class<? extends Attribute>`
Sides.`getCategory()`
Get the printing attribute class which is to be used as the "category" for this printing attribute value.

## Uses of Class in javax.script

Methods in javax.script with parameters of type Class
Modifier and Type
Method
Description
`<T> T`
Invocable.`getInterface(Class<T> clasz)`
Returns an implementation of an interface using functions compiled in the interpreter.
`<T> T`
Invocable.`getInterface(Object thiz, Class<T> clasz)`
Returns an implementation of an interface using member functions of a scripting object compiled in the interpreter.

## Uses of Class in javax.security.auth

Methods in javax.security.auth with parameters of type Class
Modifier and Type
Method
Description
`<T extends Principal>
Set<T>`
Subject.`getPrincipals(Class<T> c)`
Return a `Set` of Principals associated with this `Subject` that are instances or subclasses of the specified `Class`.
`<T> Set<T>`
Subject.`getPrivateCredentials(Class<T> c)`
Return a `Set` of private credentials associated with this `Subject` that are instances or subclasses of the specified `Class`.
`<T> Set<T>`
Subject.`getPublicCredentials(Class<T> c)`
Return a `Set` of public credentials associated with this `Subject` that are instances or subclasses of the specified `Class`.

## Uses of Class in javax.sound.midi

Methods in javax.sound.midi that return Class
Modifier and Type
Method
Description
`Class<?>`
SoundbankResource.`getDataClass()`
Obtains the class used by this sample to represent its data.
Constructors in javax.sound.midi with parameters of type Class
Modifier
Constructor
Description
`protected`
`Instrument(Soundbank soundbank, Patch patch, String name, Class<?> dataClass)`
Constructs a new MIDI instrument from the specified `Patch`.
`protected`
`SoundbankResource(Soundbank soundBank, String name, Class<?> dataClass)`
Constructs a new `SoundbankResource` from the given sound bank and wavetable index.

## Uses of Class in javax.sound.sampled

Methods in javax.sound.sampled that return Class
Modifier and Type
Method
Description
`Class<?>`
Line.Info.`getLineClass()`
Obtains the class of the line that this `Line.Info` object describes.
Constructors in javax.sound.sampled with parameters of type Class
Modifier
Constructor
Description
``
`Info(Class<?> lineClass, AudioFormat format)`
Constructs a data line's info object from the specified information, which includes a single audio format.
``
`Info(Class<?> lineClass, AudioFormat[] formats, int minBufferSize, int maxBufferSize)`
Constructs a data line's info object from the specified information, which includes a set of supported audio formats and a range for the buffer size.
``
`Info(Class<?> lineClass, AudioFormat format, int bufferSize)`
Constructs a data line's info object from the specified information, which includes a single audio format and a desired buffer size.
``
`Info(Class<?> lineClass)`
Constructs an info object that describes a line of the specified class.
``
`Info(Class<?> lineClass, String name, boolean isSource)`
Constructs a port's info object from the information given.

## Uses of Class in javax.sql

Methods in javax.sql that return types with arguments of type Class
Modifier and Type
Method
Description
`Map<String,Class<?>>`
RowSet.`getTypeMap()`
Retrieves the `Map` object associated with this `RowSet` object, which specifies the custom mapping of SQL user-defined types, if any.
Method parameters in javax.sql with type arguments of type Class
Modifier and Type
Method
Description
`void`
RowSet.`setTypeMap(Map<String,Class<?>> map)`
Installs the given `java.util.Map` object as the default type map for this `RowSet` object.

## Uses of Class in javax.sql.rowset

Methods in javax.sql.rowset that return types with arguments of type Class
Modifier and Type
Method
Description
`Map<String,Class<?>>`
BaseRowSet.`getTypeMap()`
Retrieves the type map associated with the `Connection` object for this `RowSet` object.
Methods in javax.sql.rowset with parameters of type Class
Modifier and Type
Method
Description
`boolean`
RowSetMetaDataImpl.`isWrapperFor(Class<?> interfaces)`
Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
`<T> T`
RowSetMetaDataImpl.`unwrap(Class<T> iface)`
Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.
Method parameters in javax.sql.rowset with type arguments of type Class
Modifier and Type
Method
Description
`void`
BaseRowSet.`setTypeMap(Map<String,Class<?>> map)`
Installs the given `java.util.Map` object as the type map associated with the `Connection` object for this `RowSet` object.

## Uses of Class in javax.sql.rowset.serial

Method parameters in javax.sql.rowset.serial with type arguments of type Class
Modifier and Type
Method
Description
`Object`
SerialArray.`getArray(long index, int count, Map<String,Class<?>> map)`
Returns a new array that is a copy of a slice of this `SerialArray` object, starting with the element at the given index and containing the given number of consecutive elements.
`Object`
SerialArray.`getArray(Map<String,Class<?>> map)`
Returns a new array that is a copy of this `SerialArray` object, using the given type map for the custom mapping of each element when the elements are SQL UDTs.
`Object[]`
SerialStruct.`getAttributes(Map<String,Class<?>> map)`
Retrieves the attributes for the SQL structured type that this `SerialStruct` represents as an array of `Object` values, using the given type map for custom mapping if appropriate.
`Object`
SerialRef.`getObject(Map<String,Class<?>> map)`
Returns an `Object` representing the SQL structured type to which this `SerialRef` object refers.
`ResultSet`
SerialArray.`getResultSet(long index, int count, Map<String,Class<?>> map)`
Retrieves a result set holding the elements of the subarray that starts at Retrieves a `ResultSet` object that contains a subarray of the elements in this `SerialArray` object, starting at index index and containing up to count successive elements.
`ResultSet`
SerialArray.`getResultSet(Map<String,Class<?>> map)`
Retrieves a `ResultSet` object that contains all of the elements of the SQL `ARRAY` value represented by this `SerialArray` object.
Constructor parameters in javax.sql.rowset.serial with type arguments of type Class
Modifier
Constructor
Description
``
`SerialArray(Array array, Map<String,Class<?>> map)`
Constructs a new `SerialArray` object from the given `Array` object, using the given type map for the custom mapping of each element when the elements are SQL UDTs.
``
`SerialStruct(SQLData in, Map<String,Class<?>> map)`
Constructs a `SerialStruct` object from the given `SQLData` object, using the given type map to custom map it to a class in the Java programming language.
``
`SerialStruct(Struct in, Map<String,Class<?>> map)`
Constructs a `SerialStruct` object from the given `Struct` object, using the given `java.util.Map` object for custom mapping the SQL structured type or any of its attributes that are SQL structured types.
``
`SQLInputImpl(Object[] attributes, Map<String,Class<?>> map)`
Creates an `SQLInputImpl` object initialized with the given array of attributes and the given type map.

## Uses of Class in javax.swing

Methods in javax.swing that return Class
Modifier and Type
Method
Description
`Class<?>`
JTable.`getColumnClass(int column)`
Returns the type of the column appearing in the view at column position `column`.
`Class<? extends ComponentUI>`
UIDefaults.`getUIClass(String uiClassID)`
Returns the L&F class that renders this component.
`Class<? extends ComponentUI>`
UIDefaults.`getUIClass(String uiClassID, ClassLoader uiClassLoader)`
The value of `get(uidClassID)` must be the `String` name of a class that implements the corresponding `ComponentUI` class.
Methods in javax.swing with parameters of type Class
Modifier and Type
Method
Description
`static Container`
SwingUtilities.`getAncestorOfClass(Class<?> c, Component comp)`
Convenience method for searching above `comp` in the component hierarchy and returns the first object of class `c` it finds.
`TableCellEditor`
JTable.`getDefaultEditor(Class<?> columnClass)`
Returns the editor to be used when no editor has been set in a `TableColumn`.
`TableCellRenderer`
JTable.`getDefaultRenderer(Class<?> columnClass)`
Returns the cell renderer to be used when no renderer has been set in a `TableColumn`.
`<T extends EventListener>
T[]`
AbstractListModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.
`<T extends EventListener>
T[]`
AbstractSpinnerModel.`getListeners(Class<T> listenerType)`
Return an array of all the listeners of the given type that were added to this model.
`<T extends EventListener>
T[]`
DefaultBoundedRangeModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.
`<T extends EventListener>
T[]`
DefaultButtonModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.
`<T extends EventListener>
T[]`
DefaultListSelectionModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.
`<T extends EventListener>
T[]`
DefaultSingleSelectionModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.
`<T extends EventListener>
T[]`
JComponent.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `JComponent`.
`<T extends EventListener>
T[]`
Timer.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `Timer`.
`static Object`
LookAndFeel.`makeIcon(Class<?> baseClass, String gifFile)`
Creates and returns a `UIDefault.LazyValue` that loads an image.
`void`
JTable.`setDefaultEditor(Class<?> columnClass, TableCellEditor editor)`
Sets a default cell editor to be used if no editor has been set in a `TableColumn`.
`void`
JTable.`setDefaultRenderer(Class<?> columnClass, TableCellRenderer renderer)`
Sets a default cell renderer to be used if no renderer has been set in a `TableColumn`.

## Uses of Class in javax.swing.event

Methods in javax.swing.event with parameters of type Class
Modifier and Type
Method
Description
`<T extends EventListener>
void`
EventListenerList.`add(Class<T> t, T l)`
Adds the listener as a listener of the specified type.
`int`
EventListenerList.`getListenerCount(Class<?> t)`
Returns the total number of listeners of the supplied type for this listener list.
`<T extends EventListener>
T[]`
EventListenerList.`getListeners(Class<T> t)`
Return an array of all the listeners of the given type.
`<T extends EventListener>
void`
EventListenerList.`remove(Class<T> t, T l)`
Removes the listener as a listener of the specified type.

## Uses of Class in javax.swing.plaf.synth

Methods in javax.swing.plaf.synth with parameters of type Class
Modifier and Type
Method
Description
`void`
SynthLookAndFeel.`load(InputStream input, Class<?> resourceBase)`
Loads the set of `SynthStyle`s that will be used by this `SynthLookAndFeel`.

## Uses of Class in javax.swing.table

Methods in javax.swing.table that return Class
Modifier and Type
Method
Description
`Class<?>`
AbstractTableModel.`getColumnClass(int columnIndex)`
Returns `Object.class` regardless of `columnIndex`.
`Class<?>`
TableModel.`getColumnClass(int columnIndex)`
Returns the most specific superclass for all the cell values in the column.
Methods in javax.swing.table with parameters of type Class
Modifier and Type
Method
Description
`<T extends EventListener>
T[]`
AbstractTableModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this `AbstractTableModel`.
`<T extends EventListener>
T[]`
DefaultTableColumnModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.

## Uses of Class in javax.swing.text

Methods in javax.swing.text that return Class
Modifier and Type
Method
Description
`Class<?>`
DefaultFormatter.`getValueClass()`
Returns that class that is used to create new Objects.
Methods in javax.swing.text with parameters of type Class
Modifier and Type
Method
Description
`<T extends EventListener>
T[]`
AbstractDocument.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this document.
`<T extends EventListener>
T[]`
DefaultCaret.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this caret.
`<T extends EventListener>
T[]`
StyleContext.NamedStyle.`getListeners(Class<T> listenerType)`
Return an array of all the listeners of the given type that were added to this model.
`void`
DefaultFormatter.`setValueClass(Class<?> valueClass)`
Sets that class that is used to create new Objects.

## Uses of Class in javax.swing.tree

Methods in javax.swing.tree with parameters of type Class
Modifier and Type
Method
Description
`<T extends EventListener>
T[]`
DefaultTreeModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.
`<T extends EventListener>
T[]`
DefaultTreeSelectionModel.`getListeners(Class<T> listenerType)`
Returns an array of all the objects currently registered as `FooListener`s upon this model.

## Uses of Class in javax.tools

Methods in javax.tools with parameters of type Class
Modifier and Type
Method
Description
`<S> ServiceLoader<S>`
ForwardingJavaFileManager.`getServiceLoader(JavaFileManager.Location location, Class<S> service)`
`default <S> ServiceLoader<S>`
JavaFileManager.`getServiceLoader(JavaFileManager.Location location, Class<S> service)`
Get a service loader for a specific service class from a given location.
`DocumentationTool.DocumentationTask`
DocumentationTool.`getTask(Writer out, JavaFileManager fileManager, DiagnosticListener<? super JavaFileObject> diagnosticListener, Class<?> docletClass, Iterable<String> options, Iterable<? extends JavaFileObject> compilationUnits)`
Creates a future for a documentation task with the given components and arguments.

## Uses of Class in javax.xml.xpath

Methods in javax.xml.xpath with parameters of type Class
Modifier and Type
Method
Description
`default <T> T`
XPath.`evaluateExpression(String expression, Object item, Class<T> type)`
Evaluate an XPath expression in the specified context and return the result with the type specified through the `class type`
`default <T> T`
XPath.`evaluateExpression(String expression, InputSource source, Class<T> type)`
Evaluate an XPath expression in the context of the specified `source` and return the result as specified.
`default <T> T`
XPathExpression.`evaluateExpression(Object item, Class<T> type)`
Evaluate the compiled XPath expression in the specified context, and return the result with the type specified through the `class type`.
`default <T> T`
XPathExpression.`evaluateExpression(InputSource source, Class<T> type)`
Evaluate the compiled XPath expression in the specified context, and return the result with the type specified through the `class type`
`static QName`
XPathEvaluationResult.XPathResultType.`getQNameType(Class<?> clsType)`
Returns the QName type as specified in `XPathConstants` that corresponds to the specified class type.

## Uses of Class in jdk.dynalink.beans

Methods in jdk.dynalink.beans that return Class
Modifier and Type
Method
Description
`Class<?>`
StaticClass.`getRepresentedClass()`
Returns the represented Java class.
Methods in jdk.dynalink.beans with parameters of type Class
Modifier and Type
Method
Description
`static StaticClass`
StaticClass.`forClass(Class<?> clazz)`
Retrieves the `StaticClass` instance for the specified class.
`static Object`
BeansLinker.`getConstructorMethod(Class<?> clazz, String signature)`
Return the dynamic method of constructor of the given class and the given signature.
`static Set<String>`
BeansLinker.`getInstanceMethodNames(Class<?> clazz)`
Returns a set of names of all instance methods of a class.
`TypeBasedGuardingDynamicLinker`
BeansLinker.`getLinkerForClass(Class<?> clazz)`
Returns a bean linker for a particular single class.
`static Set<String>`
BeansLinker.`getReadableInstancePropertyNames(Class<?> clazz)`
Returns a set of names of all readable instance properties of a class.
`static Set<String>`
BeansLinker.`getReadableStaticPropertyNames(Class<?> clazz)`
Returns a set of names of all readable static properties of a class.
`static Set<String>`
BeansLinker.`getStaticMethodNames(Class<?> clazz)`
Returns a set of names of all static methods of a class.
`static Set<String>`
BeansLinker.`getWritableInstancePropertyNames(Class<?> clazz)`
Returns a set of names of all writable instance properties of a class.
`static Set<String>`
BeansLinker.`getWritableStaticPropertyNames(Class<?> clazz)`
Returns a set of names of all writable static properties of a class.

## Uses of Class in jdk.dynalink.linker

Methods in jdk.dynalink.linker that return Class
Modifier and Type
Method
Description
`Class<? extends Throwable>`
GuardedInvocation.`getException()`
Returns the exception type that if thrown by the invocation should invalidate the linkage of this guarded invocation.
Methods in jdk.dynalink.linker with parameters of type Class
Modifier and Type
Method
Description
`boolean`
LinkerServices.`canConvert(Class<?> from, Class<?> to)`
Returns true if there might exist a conversion between the requested types (either an automatic JVM conversion, or one provided by any available `GuardingTypeConverterFactory`), or false if there definitely does not exist a conversion between the requested types.
`boolean`
TypeBasedGuardingDynamicLinker.`canLinkType(Class<?> type)`
Returns true if the linker can link an invocation where the first argument (receiver) is of the specified type.
`ConversionComparator.Comparison`
ConversionComparator.`compareConversion(Class<?> sourceType, Class<?> targetType1, Class<?> targetType2)`
Determines which of the two target types is the preferred conversion target from a source type.
`ConversionComparator.Comparison`
LinkerServices.`compareConversion(Class<?> sourceType, Class<?> targetType1, Class<?> targetType2)`
Determines which of the two type conversions from a source type to the two target types is preferred.
`GuardedInvocation`
GuardingTypeConverterFactory.`convertToType(Class<?> sourceType, Class<?> targetType, Supplier<MethodHandles.Lookup> lookupSupplier)`
Returns a guarded type conversion that receives a value of the specified source type and returns a value converted to the specified target type.
`GuardedInvocation`
GuardedInvocation.`dropArguments(int pos, Class<?>... valueTypes)`
Makes an invocation that drops arguments in both the invocation and the guard (if it exists and has at least `pos` parameters) with `MethodHandles.dropArguments(MethodHandle, int, Class...)`.
`MethodHandle`
LinkerServices.`getTypeConverter(Class<?> sourceType, Class<?> targetType)`
Given a source and target type, returns a method handle that converts between them.
Method parameters in jdk.dynalink.linker with type arguments of type Class
Modifier and Type
Method
Description
`GuardedInvocation`
GuardedInvocation.`dropArguments(int pos, List<Class<?>> valueTypes)`
Makes an invocation that drops arguments in both the invocation and the guard (if it exists and has at least `pos` parameters) with `MethodHandles.dropArguments(MethodHandle, int, List)`.
Constructors in jdk.dynalink.linker with parameters of type Class
Modifier
Constructor
Description
``
`GuardedInvocation(MethodHandle invocation, MethodHandle guard, SwitchPoint[] switchPoints, Class<? extends Throwable> exception)`
Creates a new guarded invocation, with a guard method handle, any number of switch points that can be used to invalidate it, and an exception that if thrown when invoked also invalidates it.
``
`GuardedInvocation(MethodHandle invocation, MethodHandle guard, SwitchPoint switchPoint, Class<? extends Throwable> exception)`
Creates a new guarded invocation, with a guard method handle, a switch point that can be used to invalidate it, and an exception that if thrown when invoked also invalidates it.

## Uses of Class in jdk.dynalink.linker.support

Methods in jdk.dynalink.linker.support that return Class
Modifier and Type
Method
Description
`static Class<?>`
TypeUtilities.`getPrimitiveType(Class<?> wrapperType)`
When passed a class representing a wrapper for a primitive type, returns the class representing the corresponding primitive type.
`static Class<?>`
TypeUtilities.`getPrimitiveTypeByName(String name)`
Given a name of a primitive type returns the class representing it.
`static Class<?>`
TypeUtilities.`getWrapperType(Class<?> primitiveType)`
When passed a class representing a primitive type, returns the class representing the corresponding wrapper type.
Methods in jdk.dynalink.linker.support with parameters of type Class
Modifier and Type
Method
Description
`boolean`
CompositeTypeBasedGuardingDynamicLinker.`canLinkType(Class<?> type)`
Returns true if at least one of the composite linkers returns true from `TypeBasedGuardingDynamicLinker.canLinkType(Class)` for the type.
`MethodHandle`
Lookup.`findGetter(Class<?> refc, String name, Class<?> type)`
Performs a `MethodHandles.Lookup.findGetter(Class, String, Class)`, converting any encountered `IllegalAccessException` into an `IllegalAccessError` and `NoSuchFieldException` into a `NoSuchFieldError`.
`static MethodHandle`
Lookup.`findOwnSpecial(MethodHandles.Lookup lookup, String name, Class<?> rtype, Class<?>... ptypes)`
Given a lookup, finds using `Lookup.findSpecial(Class, String, MethodType)` a method on that lookup's class.
`MethodHandle`
Lookup.`findOwnSpecial(String name, Class<?> rtype, Class<?>... ptypes)`
Finds using `Lookup.findSpecial(Class, String, MethodType)` a method on that lookup's class.
`static MethodHandle`
Lookup.`findOwnStatic(MethodHandles.Lookup lookup, String name, Class<?> rtype, Class<?>... ptypes)`
Given a lookup, finds using `Lookup.findStatic(Class, String, MethodType)` a method on that lookup's class.
`MethodHandle`
Lookup.`findOwnStatic(String name, Class<?> rtype, Class<?>... ptypes)`
Finds using `Lookup.findStatic(Class, String, MethodType)` a method on that lookup's class.
`MethodHandle`
Lookup.`findSpecial(Class<?> declaringClass, String name, MethodType type)`
Performs a `MethodHandles.Lookup.findSpecial(Class, String, MethodType, Class)` on the underlying lookup.
`MethodHandle`
Lookup.`findStatic(Class<?> declaringClass, String name, MethodType type)`
Performs a `MethodHandles.Lookup.findStatic(Class, String, MethodType)` on the underlying lookup.
`MethodHandle`
Lookup.`findVirtual(Class<?> declaringClass, String name, MethodType type)`
Performs a `MethodHandles.Lookup.findVirtual(Class, String, MethodType)` on the underlying lookup.
`static MethodHandle`
Guards.`getClassGuard(Class<?> clazz)`
Creates a guard method that tests its only argument for being of an exact particular class.
`static MethodHandle`
Guards.`getInstanceOfGuard(Class<?> clazz)`
Creates a guard method that tests its only argument for being an instance of a particular class.
`static Class<?>`
TypeUtilities.`getPrimitiveType(Class<?> wrapperType)`
When passed a class representing a wrapper for a primitive type, returns the class representing the corresponding primitive type.
`static Class<?>`
TypeUtilities.`getWrapperType(Class<?> primitiveType)`
When passed a class representing a primitive type, returns the class representing the corresponding wrapper type.
`static boolean`
TypeUtilities.`isConvertibleWithoutLoss(Class<?> sourceType, Class<?> targetType)`
Determines whether a type can be converted to another without losing any precision.
`static MethodHandle`
Guards.`isInstance(Class<?> clazz, int pos, MethodType type)`
Creates a method handle with arguments of a specified type, but with boolean return value.
`static MethodHandle`
Guards.`isInstance(Class<?> clazz, MethodType type)`
Creates a method handle with arguments of a specified type, but with boolean return value.
`static boolean`
TypeUtilities.`isMethodInvocationConvertible(Class<?> sourceType, Class<?> targetType)`
Determines whether one type can be converted to another type using a method invocation conversion, as per JLS 5.3 "Method Invocation Conversion".
`static MethodHandle`
Guards.`isOfClass(Class<?> clazz, MethodType type)`
Creates a guard method handle with arguments of a specified type, but with boolean return value.
`static boolean`
TypeUtilities.`isSubtype(Class<?> subType, Class<?> superType)`
Determines whether one type is a subtype of another type, as per JLS 4.10 "Subtyping".
`static boolean`
TypeUtilities.`isWrapperType(Class<?> type)`
Returns true if the passed type is a wrapper for a primitive type.

## Uses of Class in jdk.incubator.foreign

Methods in jdk.incubator.foreign with parameters of type Class
Modifier and Type
Method
Description
`static VarHandle`
MemoryHandles.`asUnsigned(VarHandle target, Class<?> adaptedType)`
Adapts a target var handle by narrowing incoming values and widening outgoing values, to and from the given type, respectively.
`static VarHandle`
MemoryHandles.`dropCoordinates(VarHandle target, int pos, Class<?>... valueTypes)`
Returns a var handle which will discard some dummy coordinates before delegating to the target var handle.
`static VarHandle`
MemoryHandles.`varHandle(Class<?> carrier, long alignmentBytes, ByteOrder byteOrder)`
Creates a memory access var handle with the given carrier type, alignment constraint, and byte order.
`static VarHandle`
MemoryHandles.`varHandle(Class<?> carrier, ByteOrder byteOrder)`
Creates a memory access var handle with the given carrier type and byte order.
`default VarHandle`
MemoryLayout.`varHandle(Class<?> carrier, MemoryLayout.PathElement... elements)`
Creates a memory access var handle that can be used to dereference memory at the layout selected by a given layout path, where the path is considered rooted in this layout.
Method parameters in jdk.incubator.foreign with type arguments of type Class
Modifier and Type
Method
Description
`static VarHandle`
MemoryHandles.`permuteCoordinates(VarHandle target, List<Class<?>> newCoordinates, int... reorder)`
Provides a var handle which adapts the coordinate values of the target var handle, by re-arranging them so that the new coordinates match the provided ones.

## Uses of Class in jdk.incubator.vector

Methods in jdk.incubator.vector that return Class
Modifier and Type
Method
Description
`Class<E>`
VectorOperators.Conversion.`domainType()`
The domain of this conversion, a primitive type.
`abstract Class<E>`
Vector.`elementType()`
Returns the primitive element type (`ETYPE`) of this vector.
`Class<E>`
VectorSpecies.`elementType()`
Returns the primitive element type of vectors of this species.
`Class<? extends VectorMask<E>>`
VectorSpecies.`maskType()`
Returns the vector mask type for this species.
`Class<F>`
VectorOperators.Conversion.`rangeType()`
The range of this conversion, a primitive type.
`Class<?>`
VectorOperators.Operator.`rangeType()`
Reports the special return type of this operator.
`Class<? extends Vector<E>>`
VectorSpecies.`vectorType()`
Returns the vector type of this species.
Methods in jdk.incubator.vector with parameters of type Class
Modifier and Type
Method
Description
`abstract <F> Vector<F>`
Vector.`check(Class<F> elementType)`
Checks that this vector has the given element type, and returns this vector unchanged.
`abstract <F> VectorMask<F>`
VectorMask.`check(Class<F> elementType)`
Checks that this mask applies to vectors with the given element type, and returns this mask unchanged.
`<E, F> VectorOperators.Conversion<E,F>`
VectorOperators.Conversion.`check(Class<E> from, Class<F> to)`
Ensures that this conversion has the desired domain and range types.
`<F> VectorSpecies<F>`
VectorSpecies.`check(Class<F> elementType)`
Checks that this species has the given element type, and returns this species unchanged.
`boolean`
VectorOperators.Operator.`compatibleWith(Class<?> elementType)`
Reports whether this operator is compatible with the proposed element type.
`static int`
VectorSpecies.`elementSize(Class<?> elementType)`
Returns the bit-size of the given vector element type (`ETYPE`).
`static <E> VectorSpecies<E>`
VectorSpecies.`of(Class<E> elementType, VectorShape shape)`
Finds a species for an element type and shape.
`static <E, F> VectorOperators.Conversion<E,F>`
VectorOperators.Conversion.`ofCast(Class<E> from, Class<F> to)`
The Java language assignment or casting conversion between two types.
`static <E> VectorSpecies<E>`
VectorSpecies.`ofLargestShape(Class<E> etype)`
Finds the largest vector species of the given element type.
`static <E> VectorSpecies<E>`
VectorSpecies.`ofPreferred(Class<E> etype)`
Finds the species preferred by the current platform for a given vector element type.
`static <E, F> VectorOperators.Conversion<E,F>`
VectorOperators.Conversion.`ofReinterpret(Class<E> from, Class<F> to)`
The bitwise reinterpretation between two types.
`<E> VectorSpecies<E>`
VectorShape.`withLanes(Class<E> elementType)`
Finds a vector species with the given element type and the current shape.
`<F> VectorSpecies<F>`
VectorSpecies.`withLanes(Class<F> newType)`
Finds a species with the given element type and the same shape as this species.

## Uses of Class in jdk.jfr

Methods in jdk.jfr with parameters of type Class
Modifier and Type
Method
Description
`static void`
FlightRecorder.`addPeriodicEvent(Class<? extends Event> eventClass, Runnable hook)`
Adds a hook for a periodic event.
`EventSettings`
Recording.`disable(Class<? extends Event> eventClass)`
Disables event.
`EventSettings`
Recording.`enable(Class<? extends Event> eventClass)`
Enables event.
`final <A> A`
AnnotationElement.`getAnnotation(Class<? extends Annotation> annotationType)`
Returns the first annotation for the specified type if an `AnnotationElement` with the same name exists, else `null`.
`<A extends Annotation>
A`
EventType.`getAnnotation(Class<A> annotationClass)`
Returns the first annotation for the specified type if an annotation element with the same name is directly present, otherwise `null`.
`<A extends Annotation>
A`
SettingDescriptor.`getAnnotation(Class<A> annotationType)`
Returns the first annotation for the specified type if an annotation element with the same name is available, `null` otherwise.
`<A extends Annotation>
A`
ValueDescriptor.`getAnnotation(Class<A> annotationType)`
Returns the first annotation for the specified type if an annotation element with the same name is directly present for this value descriptor, `null` otherwise.
`static EventType`
EventType.`getEventType(Class<? extends Event> eventClass)`
Returns the event type for an event class, or `null` if it doesn't exist.
`static void`
FlightRecorder.`register(Class<? extends Event> eventClass)`
Registers an event class.
`static void`
FlightRecorder.`unregister(Class<? extends Event> eventClass)`
Unregisters an event class.
Constructors in jdk.jfr with parameters of type Class
Modifier
Constructor
Description
``
`AnnotationElement(Class<? extends Annotation> annotationType)`
Creates an annotation element to use for dynamically defined events.
``
`AnnotationElement(Class<? extends Annotation> annotationType, Object value)`
Creates an annotation element to use for dynamically defined events.
``
`AnnotationElement(Class<? extends Annotation> annotationType, Map<String,Object> values)`
Creates an annotation element to use for dynamically defined events.
``
`ValueDescriptor(Class<?> type, String name)`
Constructs a value descriptor, useful for dynamically creating event types and annotations.
``
`ValueDescriptor(Class<?> type, String name, List<AnnotationElement> annotations)`
Constructs a value descriptor, useful for dynamically creating event types and annotations.

## Uses of Class in jdk.jfr.consumer

Methods in jdk.jfr.consumer with parameters of type Class
Modifier and Type
Method
Description
`EventSettings`
RecordingStream.`disable(Class<? extends Event> eventClass)`
Disables event.
`EventSettings`
RecordingStream.`enable(Class<? extends Event> eventClass)`
Enables event.

## Uses of Class in jdk.jshell.execution

Methods in jdk.jshell.execution that return Class
Modifier and Type
Method
Description
`protected Class<?>`
DirectExecutionControl.`findClass(String name)`
Finds the class with the specified binary name.
`Class<?>`
LoaderDelegate.`findClass(String name)`
Finds the class with the specified binary name.

## Uses of Class in jdk.net

Methods in jdk.net with parameters of type Class
Modifier and Type
Method
Description
`static Set<SocketOption<?>>`
Sockets.`supportedOptions(Class<?> socketType)`
Deprecated, for removal: This API element is subject to removal in a future version.
use `Socket.supportedOptions()`, `ServerSocket.supportedOptions()`, or `DatagramSocket.supportedOptions()` instead.