Uses of Interface
java.util.function.Supplier

Packages that use Supplier

Package	Description
java.lang	Provides classes that are fundamental to the design of the Java programming language.
java.util	Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
java.util.concurrent	Utility classes commonly useful in concurrent programming.
java.util.logging	Provides the classes and interfaces of the JavaTM 2 platform's core logging facilities.
java.util.stream	Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.

Uses of Supplier in java.lang

Methods in java.lang with parameters of type Supplier

Modifier and Type	Method and Description
static <S> ThreadLocal<S>	ThreadLocal.withInitial(Supplier<? extends S> supplier) Creates a thread local variable.

Uses of Supplier in java.util

Methods in java.util with parameters of type Supplier

Modifier and Type	Method and Description
T	Optional.orElseGet(Supplier<? extends T> other) Return the value if present, otherwise invoke other and return the result of that invocation.
<X extends Throwable> T	Optional.orElseThrow(Supplier<? extends X> exceptionSupplier) Return the contained value, if present, otherwise throw an exception to be created by the provided supplier.
<X extends Throwable> long	OptionalLong.orElseThrow(Supplier<X> exceptionSupplier) Return the contained value, if present, otherwise throw an exception to be created by the provided supplier.
<X extends Throwable> int	OptionalInt.orElseThrow(Supplier<X> exceptionSupplier) Return the contained value, if present, otherwise throw an exception to be created by the provided supplier.
<X extends Throwable> double	OptionalDouble.orElseThrow(Supplier<X> exceptionSupplier) Return the contained value, if present, otherwise throw an exception to be created by the provided supplier.
static <T> T	Objects.requireNonNull(T obj, Supplier<String> messageSupplier) Checks that the specified object reference is not null and throws a customized NullPointerException if it is.

Uses of Supplier in java.util.concurrent

Methods in java.util.concurrent with parameters of type Supplier

Modifier and Type	Method and Description
static <U> CompletableFuture<U>	CompletableFuture.supplyAsync(Supplier<U> supplier) Returns a new CompletableFuture that is asynchronously completed by a task running in the ForkJoinPool.commonPool() with the value obtained by calling the given Supplier.
static <U> CompletableFuture<U>	CompletableFuture.supplyAsync(Supplier<U> supplier, Executor executor) Returns a new CompletableFuture that is asynchronously completed by a task running in the given executor with the value obtained by calling the given Supplier.

Uses of Supplier in java.util.logging

Methods in java.util.logging with parameters of type Supplier

Modifier and Type	Method and Description
void	Logger.config(Supplier<String> msgSupplier) Log a CONFIG message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.fine(Supplier<String> msgSupplier) Log a FINE message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.finer(Supplier<String> msgSupplier) Log a FINER message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.finest(Supplier<String> msgSupplier) Log a FINEST message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.info(Supplier<String> msgSupplier) Log a INFO message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.log(Level level, Supplier<String> msgSupplier) Log a message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.log(Level level, Throwable thrown, Supplier<String> msgSupplier) Log a lazily constructed message, with associated Throwable information.
void	Logger.logp(Level level, String sourceClass, String sourceMethod, Supplier<String> msgSupplier) Log a lazily constructed message, specifying source class and method, with no arguments.
void	Logger.logp(Level level, String sourceClass, String sourceMethod, Throwable thrown, Supplier<String> msgSupplier) Log a lazily constructed message, specifying source class and method, with associated Throwable information.
void	Logger.severe(Supplier<String> msgSupplier) Log a SEVERE message, which is only to be constructed if the logging level is such that the message will actually be logged.
void	Logger.warning(Supplier<String> msgSupplier) Log a WARNING message, which is only to be constructed if the logging level is such that the message will actually be logged.

Uses of Supplier in java.util.stream

Methods in java.util.stream that return Supplier

Modifier and Type	Method and Description
Supplier<A>	Collector.supplier() A function that creates and returns a new mutable result container.

Methods in java.util.stream with parameters of type Supplier

Modifier and Type	Method and Description
<R> R	Stream.collect(Supplier<R> supplier, BiConsumer<R,? super T> accumulator, BiConsumer<R,R> combiner) Performs a mutable reduction operation on the elements of this stream.
<R> R	DoubleStream.collect(Supplier<R> supplier, ObjDoubleConsumer<R> accumulator, BiConsumer<R,R> combiner) Performs a mutable reduction operation on the elements of this stream.
<R> R	IntStream.collect(Supplier<R> supplier, ObjIntConsumer<R> accumulator, BiConsumer<R,R> combiner) Performs a mutable reduction operation on the elements of this stream.
<R> R	LongStream.collect(Supplier<R> supplier, ObjLongConsumer<R> accumulator, BiConsumer<R,R> combiner) Performs a mutable reduction operation on the elements of this stream.
static DoubleStream	StreamSupport.doubleStream(Supplier<? extends Spliterator.OfDouble> supplier, int characteristics, boolean parallel) Creates a new sequential or parallel DoubleStream from a Supplier of Spliterator.OfDouble.
static <T> Stream<T>	Stream.generate(Supplier<T> s) Returns an infinite sequential unordered stream where each element is generated by the provided Supplier.
static <T,K,D,A,M extends Map<K,D>> Collector<T,?,M>	Collectors.groupingBy(Function<? super T,? extends K> classifier, Supplier<M> mapFactory, Collector<? super T,A,D> downstream) Returns a Collector implementing a cascaded "group by" operation on input elements of type T, grouping elements according to a classification function, and then performing a reduction operation on the values associated with a given key using the specified downstream Collector.
static <T,K,A,D,M extends ConcurrentMap<K,D>> Collector<T,?,M>	Collectors.groupingByConcurrent(Function<? super T,? extends K> classifier, Supplier<M> mapFactory, Collector<? super T,A,D> downstream) Returns a concurrent Collector implementing a cascaded "group by" operation on input elements of type T, grouping elements according to a classification function, and then performing a reduction operation on the values associated with a given key using the specified downstream Collector.
static IntStream	StreamSupport.intStream(Supplier<? extends Spliterator.OfInt> supplier, int characteristics, boolean parallel) Creates a new sequential or parallel IntStream from a Supplier of Spliterator.OfInt.
static LongStream	StreamSupport.longStream(Supplier<? extends Spliterator.OfLong> supplier, int characteristics, boolean parallel) Creates a new sequential or parallel LongStream from a Supplier of Spliterator.OfLong.
static <T,A,R> Collector<T,A,R>	Collector.of(Supplier<A> supplier, BiConsumer<A,T> accumulator, BinaryOperator<A> combiner, Function<A,R> finisher, Collector.Characteristics... characteristics) Returns a new Collector described by the given supplier, accumulator, combiner, and finisher functions.
static <T,R> Collector<T,R,R>	Collector.of(Supplier<R> supplier, BiConsumer<R,T> accumulator, BinaryOperator<R> combiner, Collector.Characteristics... characteristics) Returns a new Collector described by the given supplier, accumulator, and combiner functions.
static <T> Stream<T>	StreamSupport.stream(Supplier<? extends Spliterator<T>> supplier, int characteristics, boolean parallel) Creates a new sequential or parallel Stream from a Supplier of Spliterator.
static <T,C extends Collection<T>> Collector<T,?,C>	Collectors.toCollection(Supplier<C> collectionFactory) Returns a Collector that accumulates the input elements into a new Collection, in encounter order.
static <T,K,U,M extends ConcurrentMap<K,U>> Collector<T,?,M>	Collectors.toConcurrentMap(Function<? super T,? extends K> keyMapper, Function<? super T,? extends U> valueMapper, BinaryOperator<U> mergeFunction, Supplier<M> mapSupplier) Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.
static <T,K,U,M extends Map<K,U>> Collector<T,?,M>	Collectors.toMap(Function<? super T,? extends K> keyMapper, Function<? super T,? extends U> valueMapper, BinaryOperator<U> mergeFunction, Supplier<M> mapSupplier) Returns a Collector that accumulates elements into a Map whose keys and values are the result of applying the provided mapping functions to the input elements.