Uses of Annotation Interface
java.lang.FunctionalInterface

Packages that use FunctionalInterface

Package	Description
java.awt	Contains all of the classes for creating user interfaces and for painting graphics and images.
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.classfile	Provides classfile parsing, generation, and transformation library.
java.lang.foreign	Provides low-level access to memory and functions outside the Java runtime.
java.net.http	HTTP Client and WebSocket APIs
java.nio.file	Defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems.
java.security	Provides the classes and interfaces for the security framework.
java.time.temporal	Access to date and time using fields and units, and date time adjusters.
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	Utility classes commonly useful in concurrent programming.
java.util.function	Functional interfaces provide target types for lambda expressions and method references.
java.util.logging	Provides the classes and interfaces of the Java 2 platform's core logging facilities.
java.util.prefs	This package allows applications to store and retrieve user and system preference and configuration data.
java.util.stream	Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.
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.

Uses of FunctionalInterface in java.awt

Classes in java.awt with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	KeyEventDispatcher	A KeyEventDispatcher cooperates with the current KeyboardFocusManager in the targeting and dispatching of all KeyEvents.
interface	KeyEventPostProcessor	A KeyEventPostProcessor cooperates with the current KeyboardFocusManager in the final resolution of all unconsumed KeyEvents.

Uses of FunctionalInterface in java.io

Classes in java.io with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	FileFilter	A filter for abstract pathnames.
interface	FilenameFilter	Instances of classes that implement this interface are used to filter filenames.
interface	ObjectInputFilter	Filter classes, array lengths, and graph metrics during deserialization.

Uses of FunctionalInterface in java.lang

Classes in java.lang with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	Runnable	Represents an operation that does not return a result.
static interface	ScopedValue.CallableOpPREVIEW<T,X extends Throwable>	Preview. An operation that returns a result and may throw an exception.
static interface	Thread.UncaughtExceptionHandler	Interface for handlers invoked when a Thread abruptly terminates due to an uncaught exception.

Uses of FunctionalInterface in java.lang.classfile^PREVIEW

Classes in java.lang.classfile^PREVIEW with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	ClassHierarchyResolverPREVIEW	Preview. Provides class hierarchy information for generating correct stack maps during code building.
interface	ClassTransformPREVIEW	Preview. A transformation on streams of ClassElementPREVIEW.
interface	CodeTransformPREVIEW	Preview. A transformation on streams of CodeElementPREVIEW.
interface	FieldTransformPREVIEW	Preview. A transformation on streams of FieldElementPREVIEW.
interface	MethodTransformPREVIEW	Preview. A transformation on streams of MethodElementPREVIEW.

Uses of FunctionalInterface in java.lang.foreign

Classes in java.lang.foreign with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	SegmentAllocator	An object that may be used to allocate memory segments.
interface	SymbolLookup	A symbol lookup retrieves the address of a symbol in one or more libraries.

Uses of FunctionalInterface in java.net.http

Classes in java.net.http with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
static interface	HttpResponse.BodyHandler<T>	A handler for response bodies.

Uses of FunctionalInterface in java.nio.file

Classes in java.nio.file with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
static interface	DirectoryStream.Filter<T>	An interface that is implemented by objects that decide if a directory entry should be accepted or filtered.
interface	PathMatcher	An interface that is implemented by objects that perform match operations on paths.

Uses of FunctionalInterface in java.security

Classes in java.security with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	PrivilegedAction<T>	A computation to be performed with privileges enabled.
interface	PrivilegedExceptionAction<T>	A computation to be performed with privileges enabled, that throws one or more checked exceptions.

Uses of FunctionalInterface in java.time.temporal

Classes in java.time.temporal with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	TemporalAdjuster	Strategy for adjusting a temporal object.
interface	TemporalQuery<R>	Strategy for querying a temporal object.

Uses of FunctionalInterface in java.util

Classes in java.util with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	Comparator<T>	A comparison function, which imposes a total ordering on some collection of objects.

Uses of FunctionalInterface in java.util.concurrent

Classes in java.util.concurrent with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	Callable<V>	A task that returns a result and may throw an exception.
static interface	Flow.Publisher<T>	A producer of items (and related control messages) received by Subscribers.

Uses of FunctionalInterface in java.util.function

Classes in java.util.function with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	BiConsumer<T,U>	Represents an operation that accepts two input arguments and returns no result.
interface	BiFunction<T,U,R>	Represents a function that accepts two arguments and produces a result.
interface	BinaryOperator<T>	Represents an operation upon two operands of the same type, producing a result of the same type as the operands.
interface	BiPredicate<T,U>	Represents a predicate (boolean-valued function) of two arguments.
interface	BooleanSupplier	Represents a supplier of boolean-valued results.
interface	Consumer<T>	Represents an operation that accepts a single input argument and returns no result.
interface	DoubleBinaryOperator	Represents an operation upon two double-valued operands and producing a double-valued result.
interface	DoubleConsumer	Represents an operation that accepts a single double-valued argument and returns no result.
interface	DoubleFunction<R>	Represents a function that accepts a double-valued argument and produces a result.
interface	DoublePredicate	Represents a predicate (boolean-valued function) of one double-valued argument.
interface	DoubleSupplier	Represents a supplier of double-valued results.
interface	DoubleToIntFunction	Represents a function that accepts a double-valued argument and produces an int-valued result.
interface	DoubleToLongFunction	Represents a function that accepts a double-valued argument and produces a long-valued result.
interface	DoubleUnaryOperator	Represents an operation on a single double-valued operand that produces a double-valued result.
interface	Function<T,R>	Represents a function that accepts one argument and produces a result.
interface	IntBinaryOperator	Represents an operation upon two int-valued operands and producing an int-valued result.
interface	IntConsumer	Represents an operation that accepts a single int-valued argument and returns no result.
interface	IntFunction<R>	Represents a function that accepts an int-valued argument and produces a result.
interface	IntPredicate	Represents a predicate (boolean-valued function) of one int-valued argument.
interface	IntSupplier	Represents a supplier of int-valued results.
interface	IntToDoubleFunction	Represents a function that accepts an int-valued argument and produces a double-valued result.
interface	IntToLongFunction	Represents a function that accepts an int-valued argument and produces a long-valued result.
interface	IntUnaryOperator	Represents an operation on a single int-valued operand that produces an int-valued result.
interface	LongBinaryOperator	Represents an operation upon two long-valued operands and producing a long-valued result.
interface	LongConsumer	Represents an operation that accepts a single long-valued argument and returns no result.
interface	LongFunction<R>	Represents a function that accepts a long-valued argument and produces a result.
interface	LongPredicate	Represents a predicate (boolean-valued function) of one long-valued argument.
interface	LongSupplier	Represents a supplier of long-valued results.
interface	LongToDoubleFunction	Represents a function that accepts a long-valued argument and produces a double-valued result.
interface	LongToIntFunction	Represents a function that accepts a long-valued argument and produces an int-valued result.
interface	LongUnaryOperator	Represents an operation on a single long-valued operand that produces a long-valued result.
interface	ObjDoubleConsumer<T>	Represents an operation that accepts an object-valued and a double-valued argument, and returns no result.
interface	ObjIntConsumer<T>	Represents an operation that accepts an object-valued and a int-valued argument, and returns no result.
interface	ObjLongConsumer<T>	Represents an operation that accepts an object-valued and a long-valued argument, and returns no result.
interface	Predicate<T>	Represents a predicate (boolean-valued function) of one argument.
interface	Supplier<T>	Represents a supplier of results.
interface	ToDoubleBiFunction<T,U>	Represents a function that accepts two arguments and produces a double-valued result.
interface	ToDoubleFunction<T>	Represents a function that produces a double-valued result.
interface	ToIntBiFunction<T,U>	Represents a function that accepts two arguments and produces an int-valued result.
interface	ToIntFunction<T>	Represents a function that produces an int-valued result.
interface	ToLongBiFunction<T,U>	Represents a function that accepts two arguments and produces a long-valued result.
interface	ToLongFunction<T>	Represents a function that produces a long-valued result.
interface	UnaryOperator<T>	Represents an operation on a single operand that produces a result of the same type as its operand.

Uses of FunctionalInterface in java.util.logging

Classes in java.util.logging with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	Filter	A Filter can be used to provide fine grain control over what is logged, beyond the control provided by log levels.

Uses of FunctionalInterface in java.util.prefs

Classes in java.util.prefs with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	PreferenceChangeListener	A listener for receiving preference change events.

Uses of FunctionalInterface in java.util.stream

Classes in java.util.stream with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
static interface	DoubleStream.DoubleMapMultiConsumer	Represents an operation that accepts a double-valued argument and a DoubleConsumer, and returns no result.
static interface	Gatherer.DownstreamPREVIEW<T>	Preview. A Downstream object is the next stage in a pipeline of operations, to which elements can be sent.
static interface	Gatherer.IntegratorPREVIEW<A,T,R>	Preview. An Integrator receives elements and processes them, optionally using the supplied state, and optionally sends incremental results downstream.
static interface	Gatherer.Integrator.GreedyPREVIEW<A,T,R>	Preview. Greedy Integrators consume all their input, and may only relay that the downstream does not want more elements.
static interface	IntStream.IntMapMultiConsumer	Represents an operation that accepts an int-valued argument and an IntConsumer, and returns no result.
static interface	LongStream.LongMapMultiConsumer	Represents an operation that accepts a long-valued argument and a LongConsumer, and returns no result.

Uses of FunctionalInterface in jdk.dynalink.beans

Classes in jdk.dynalink.beans with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	MissingMemberHandlerFactory	A factory for creating method handles for linking missing member behavior in BeansLinker.

Uses of FunctionalInterface in jdk.dynalink.linker

Classes in jdk.dynalink.linker with annotations of type FunctionalInterface

Modifier and Type	Interface	Description
interface	GuardedInvocationTransformer	Interface for objects that are used to transform one guarded invocation into another one.
interface	MethodHandleTransformer	A generic interface describing operations that transform method handles.
interface	MethodTypeConversionStrategy	Interface for objects representing a strategy for converting a method handle to a new type.