Holder (Commons core 1.4 API)

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`static <T> Holder<T>`	`empty()`
`boolean`	`equals(Object obj)`
`Holder<T>`	`filter(Predicate<? super T> predicate)`
`T`	`get()`
`int`	`hashCode()`
`void`	`ifPresent(Consumer<? super T> consumer)`
`boolean`	`isEmpty()` Returns the holder value whether null
`<U> Holder<U>`	`map(Function<? super T,? extends U> mapper)`
`static <T> Holder<T>`	`of(T value)`
`T`	`orElse(T other)`
`T`	`orElseGet(Supplier<T> other)`
`<E extends Throwable> T`	`orElseThrow(Supplier<? extends E> exceptionSupplier)`
`T`	`set(T value)` Sets a newly value and return former value
`void`	`setIfAbsent(T value)` Sets a new value if former value is null
`T`	`setIfMatches(T value, BiPredicate<T,T> predicate)`
`T`	`setIfMatches(T value, Predicate<T> predicate)`
`T`	`setIfPresent(T value)` Replaces value if former value is not null, and return former value
`String`	`toString()`

public static <T> Holder<T> of(T value)

public T setIfMatches(T value,
                      Predicate<T> predicate)

public T setIfMatches(T value,
                      BiPredicate<T,T> predicate)

public void ifPresent(Consumer<? super T> consumer)

public <U> Holder<U> map(Function<? super T,? extends U> mapper)

public Holder<T> filter(Predicate<? super T> predicate)

public T orElseGet(Supplier<T> other)

public <E extends Throwable> T orElseThrow(Supplier<? extends E> exceptionSupplier)
                                    throws E extends Throwable

类 Holder<T>