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函数式接口

2021-04-06 17:30:02   0  举报

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java8函数式接口与方法说明汇总

Java8

java8新特性

函数式编程

函数式接口

functon

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Predicate

Predicate<T>

boolean test(T t)

Predicate<T> and(Predicate<? super T> other)

Predicate<T> negate()

Predicate<T> or(Predicate<? super T> other)

static <T> Predicate<T> isEqual(Object targetRef)

XXXPredicate

IntPredicate

boolean test(int value)

IntPredicate and(IntPredicate other)

IntPredicate negate()

IntPredicate or(IntPredicate other)

LongPredicate

boolean test(long value)

LongPredicate and(LongPredicate other)

LongPredicate negate()

LongPredicate or(LongPredicate other)

DoublePredicate

boolean test(double value)

DoublePredicate and(DoublePredicate other)

DoublePredicate negate()

DoublePredicate or(DoublePredicate other)

BiPredicate

BiPredicate<T,U>

boolean test(T t, U u)

BiPredicate<T,U> and(BiPredicate<? super T,? super U> other)

BiPredicate<T,U> negate()

BiPredicate<T,U> or(BiPredicate<? super T,? super U> other)

Function

Function<T, R>

R apply(T t)

Function<V, R> compose(Function<? super V, ? extends T> before)

Function<T, V> andThen(Function<? super R, ? extends V> after

static Function<T, T> identity()

XXXToFunction

IntFunction<R>

R apply(int value)

DoubleFunction<R>

R apply(double value)

LongFunction<R>

R apply(long value)

ToXXXFunction<T>

ToIntFunction<T>

int applyAsInt(T value)

ToLongFunction<T>

long applyAsLong(T value)

ToDoubleFunction<T>

double applyAsDouble(T value)

XXXToXXXFunction

IntToXXXFunction

IntToDoubleFunction

double applyAsDouble(int value)

IntToLongFunction

long applyAsLong(int value)

LongToXXXFunction

LongToDoubleFunction

double applyAsDouble(long value)

LongToIntFunction

int applyAsInt(long value)

DoubleToXXXFunction

DoubleToIntFunction

int applyAsInt(double value)

DoubleToLongFunction

long applyAsLong(double value)

BiFunction

BiFunction<T, U, R>

R apply(T t, U u)

BiFunction<T, U, V> andThen(Function<? super R, ? extends V> after)

ToXXXBiFunction<T,U>

ToIntBiFunction<T, U>

int applyAsInt(T t, U u)

ToLongBiFunction<T, U>

long applyAsLong(T t, U u)

ToDoubleBiFunction<T, U>

double applyAsDouble(T t, U u)

Supplier

Supplier<T>

T get()

XXXSupplier

BooleanSupplier

boolean getAsBoolean()

IntSupplier

int getAsInt()

LongSupplier

long getAsLong()

DoubleSupplier

double getAsDouble()

Consumer

Consumer<T>

void accept(T t)

Consumer andThen(Consumer<? super T> after)

XXXConsumer

IntConsumer

void accept(int value)

IntConsumer andThen(IntConsumer after)

LongConsumer

void accept(long value)

LongConsumer andThen(LongConsumer after)

DoubleConsumer

void accept(double value)

DoubleConsumer andThen(DoubleConsumer after)

ObjXXXConsumer

ObjIntConsumer<T>

void accept(T t, int value)

ObjLongConsumer<T>

void accept(T t, int value)

ObjDoubleConsumer<T>

void accept(T t, int value)

BiConsumer

BiConsumer<T,U>

void accept(T t, U u)

BiConsumer<T,U> andThen(BiConsumer<? super T,? super U> after)

Operator

UnaryOperator

UnaryOperator<T>

static <T> UnaryOperator<T> identity()

extends Function <T，T>

XXXUnaryOperator

IntUnaryOperator

int applyAsInt(int operand)

IntUnaryOperator compose(IntUnaryOperator before)

IntUnaryOperator andThen(IntUnaryOperator after)

static IntUnaryOperator identity()

LongUnaryOperator

long applyAsLong(long operand)

LongUnaryOperator compose(LongUnaryOperator before)

LongUnaryOperator andThen(LongUnaryOperator after)

static LongUnaryOperator identity()

DoubleUnaryOperator

double applyAsDouble(double operand)

DoubleUnaryOperator compose(DoubleUnaryOperator before)

DoubleUnaryOperator andThen(DoubleUnaryOperator after)

static DoubleUnaryOperator identity()

BinaryOperator

BinaryOperator<T>

static <T> BinaryOperator<T> minBy(Comparator<? super T> comparator)

static <T> BinaryOperator<T> maxBy(Comparator<? super T> comparator)

extends BiFunction <T，T，T>

XXXBinaryOperator

IntBinaryOperator

int applyAsInt(int left, int right)

LongBinaryOperator

long applyAsLong(long left, long right)

DoubleBinaryOperator

double applyAsDouble(double left, double right)

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