Uses of Class java.lang.invoke.MethodHandle (Java Platform SE 8 )

Packages that use MethodHandle
Package	Description
java.lang.invoke	The `java.lang.invoke` package contains dynamic language support provided directly by the Java core class libraries and virtual machine.

Uses of MethodHandle in java.lang.invoke

Methods in java.lang.invoke that return MethodHandle
Modifier and Type	Method and Description
`static MethodHandle`	MethodHandles.`arrayElementGetter(Class<?> arrayClass)` Produces a method handle giving read access to elements of an array.
`static MethodHandle`	MethodHandles.`arrayElementSetter(Class<?> arrayClass)` Produces a method handle giving write access to elements of an array.
`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.
`MethodHandle`	MethodHandle.`asFixedArity()` Makes a fixed arity method handle which is otherwise equivalent to the current method handle.
`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.`asType(MethodType newType)` Produces an adapter method handle which adapts the type of the current method handle to a new type.
`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.
`MethodHandle`	MethodHandles.Lookup.`bind(Object receiver, String name, MethodType type)` Produces an early-bound method handle for a non-static method.
`MethodHandle`	MethodHandle.`bindTo(Object x)` Binds a value `x` to the first argument of a method handle, without invoking it.
`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.
`static MethodHandle`	MethodHandles.`collectArguments(MethodHandle target, int pos, MethodHandle filter)` Adapts a target method handle by pre-processing a sub-sequence of its arguments with a filter (another method handle).
`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.
`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.
`abstract MethodHandle`	CallSite.`dynamicInvoker()` Produces a method handle equivalent to an invokedynamic instruction which has been linked to this call site.
`MethodHandle`	VolatileCallSite.`dynamicInvoker()` Produces a method handle equivalent to an invokedynamic instruction which has been linked to this call site.
`MethodHandle`	ConstantCallSite.`dynamicInvoker()` Returns this call site's permanent target.
`MethodHandle`	MutableCallSite.`dynamicInvoker()` Produces a method handle equivalent to an invokedynamic instruction which has been linked to this call site.
`static MethodHandle`	MethodHandles.`exactInvoker(MethodType type)` Produces a special invoker method handle which can be used to invoke any method handle of the given type, as if by `invokeExact`.
`static MethodHandle`	MethodHandles.`explicitCastArguments(MethodHandle target, MethodType newType)` Produces a method handle which adapts the type of the given method handle to a new type by pairwise argument and return type conversion.
`static MethodHandle`	MethodHandles.`filterArguments(MethodHandle target, int pos, MethodHandle... filters)` Adapts a target method handle by pre-processing one or more of its arguments, each with its own unary filter function, and then calling the target with each pre-processed argument replaced by the result of its corresponding filter function.
`static MethodHandle`	MethodHandles.`filterReturnValue(MethodHandle target, MethodHandle filter)` Adapts a target method handle by post-processing its return value (if any) with a filter (another method handle).
`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.
`MethodHandle`	MethodHandles.Lookup.`findVirtual(Class<?> refc, String name, MethodType type)` Produces a method handle for a virtual method.
`static MethodHandle`	MethodHandles.`foldArguments(MethodHandle target, MethodHandle combiner)` Adapts a target method handle by pre-processing some of its arguments, and then calling the target with the result of the pre-processing, inserted into the original sequence of arguments.
`abstract MethodHandle`	CallSite.`getTarget()` Returns the target method of the call site, according to the behavior defined by this call site's specific class.
`MethodHandle`	VolatileCallSite.`getTarget()` Returns the target method of the call site, which behaves like a `volatile` field of the `VolatileCallSite`.
`MethodHandle`	ConstantCallSite.`getTarget()` Returns the target method of the call site, which behaves like a `final` field of the `ConstantCallSite`.
`MethodHandle`	MutableCallSite.`getTarget()` Returns the target method of the call site, which behaves like a normal field of the `MutableCallSite`.
`MethodHandle`	SwitchPoint.`guardWithTest(MethodHandle target, MethodHandle fallback)` Returns a method handle which always delegates either to the target or the fallback.
`static MethodHandle`	MethodHandles.`guardWithTest(MethodHandle test, MethodHandle target, MethodHandle fallback)` Makes a method handle which adapts a target method handle, by guarding it with a test, a boolean-valued method handle.
`static MethodHandle`	MethodHandles.`identity(Class<?> type)` Produces a method handle which returns its sole argument when invoked.
`static MethodHandle`	MethodHandles.`insertArguments(MethodHandle target, int pos, Object... values)` Provides a target method handle with one or more bound arguments in advance of the method handle's invocation.
`static MethodHandle`	MethodHandles.`invoker(MethodType type)` Produces a special invoker method handle which can be used to invoke any method handle compatible with the given type, as if by `invoke`.
`static MethodHandle`	MethodHandles.`permuteArguments(MethodHandle target, MethodType newType, int... reorder)` Produces a method handle which adapts the calling sequence of the given method handle to a new type, by reordering the arguments.
`static MethodHandle`	MethodHandles.`spreadInvoker(MethodType type, int leadingArgCount)` Produces a method handle which will invoke any method handle of the given `type`, with a given number of trailing arguments replaced by a single trailing `Object[]` array.
`static MethodHandle`	MethodHandles.`throwException(Class<?> returnType, Class<? extends Throwable> exType)` Produces a method handle which will throw exceptions of the given `exType`.
`MethodHandle`	MethodHandles.Lookup.`unreflect(Method m)` Makes a direct method handle to m, if the lookup class has permission.
`MethodHandle`	MethodHandles.Lookup.`unreflectConstructor(Constructor<?> c)` Produces a method handle for a reflected constructor.
`MethodHandle`	MethodHandles.Lookup.`unreflectGetter(Field f)` Produces a method handle giving read access to a reflected field.
`MethodHandle`	MethodHandles.Lookup.`unreflectSetter(Field f)` Produces a method handle giving write access to a reflected field.
`MethodHandle`	MethodHandles.Lookup.`unreflectSpecial(Method m, Class<?> specialCaller)` Produces a method handle for a reflected method.
`static MethodHandle`	MethodHandleProxies.`wrapperInstanceTarget(Object x)` Produces or recovers a target method handle which is behaviorally equivalent to the unique method of this wrapper instance.

Methods in java.lang.invoke with parameters of type MethodHandle
Modifier and Type	Method and Description
`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.
`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.
`static MethodHandle`	MethodHandles.`collectArguments(MethodHandle target, int pos, MethodHandle filter)` Adapts a target method handle by pre-processing a sub-sequence of its arguments with a filter (another method handle).
`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.
`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.`explicitCastArguments(MethodHandle target, MethodType newType)` Produces a method handle which adapts the type of the given method handle to a new type by pairwise argument and return type conversion.
`static MethodHandle`	MethodHandles.`filterArguments(MethodHandle target, int pos, MethodHandle... filters)` Adapts a target method handle by pre-processing one or more of its arguments, each with its own unary filter function, and then calling the target with each pre-processed argument replaced by the result of its corresponding filter function.
`static MethodHandle`	MethodHandles.`filterArguments(MethodHandle target, int pos, MethodHandle... filters)` Adapts a target method handle by pre-processing one or more of its arguments, each with its own unary filter function, and then calling the target with each pre-processed argument replaced by the result of its corresponding filter function.
`static MethodHandle`	MethodHandles.`filterReturnValue(MethodHandle target, MethodHandle filter)` Adapts a target method handle by post-processing its return value (if any) with a filter (another method handle).
`static MethodHandle`	MethodHandles.`foldArguments(MethodHandle target, MethodHandle combiner)` Adapts a target method handle by pre-processing some of its arguments, and then calling the target with the result of the pre-processing, inserted into the original sequence of arguments.
`MethodHandle`	SwitchPoint.`guardWithTest(MethodHandle target, MethodHandle fallback)` Returns a method handle which always delegates either to the target or the fallback.
`static MethodHandle`	MethodHandles.`guardWithTest(MethodHandle test, MethodHandle target, MethodHandle fallback)` Makes a method handle which adapts a target method handle, by guarding it with a test, a boolean-valued method handle.
`static MethodHandle`	MethodHandles.`insertArguments(MethodHandle target, int pos, Object... values)` Provides a target method handle with one or more bound arguments in advance of the method handle's invocation.
`static CallSite`	LambdaMetafactory.`metafactory(MethodHandles.Lookup caller, String invokedName, MethodType invokedType, MethodType samMethodType, MethodHandle implMethod, MethodType instantiatedMethodType)` Facilitates the creation of simple "function objects" that implement one or more interfaces by delegation to a provided `MethodHandle`, after appropriate type adaptation and partial evaluation of arguments.
`static MethodHandle`	MethodHandles.`permuteArguments(MethodHandle target, MethodType newType, int... reorder)` Produces a method handle which adapts the calling sequence of the given method handle to a new type, by reordering the arguments.
`static <T extends Member> T`	MethodHandles.`reflectAs(Class<T> expected, MethodHandle target)` Performs an unchecked "crack" of a direct method handle.
`MethodHandleInfo`	MethodHandles.Lookup.`revealDirect(MethodHandle target)` Cracks a direct method handle created by this lookup object or a similar one.
`abstract void`	CallSite.`setTarget(MethodHandle newTarget)` Updates the target method of this call site, according to the behavior defined by this call site's specific class.
`void`	VolatileCallSite.`setTarget(MethodHandle newTarget)` Updates the target method of this call site, as a volatile variable.
`void`	ConstantCallSite.`setTarget(MethodHandle ignore)` Always throws an `UnsupportedOperationException`.
`void`	MutableCallSite.`setTarget(MethodHandle newTarget)` Updates the target method of this call site, as a normal variable.

Constructors in java.lang.invoke with parameters of type MethodHandle
Constructor and Description
`ConstantCallSite(MethodHandle target)` Creates a call site with a permanent target.
`ConstantCallSite(MethodType targetType, MethodHandle createTargetHook)` Creates a call site with a permanent target, possibly bound to the call site itself.
`MutableCallSite(MethodHandle target)` Creates a call site object with an initial target method handle.
`VolatileCallSite(MethodHandle target)` Creates a call site with a volatile binding to its target.

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2015, Oracle and/or its affiliates. All rights reserved.

Uses of Classjava.lang.invoke.MethodHandle

Uses of MethodHandle in java.lang.invoke

Uses of Class
java.lang.invoke.MethodHandle