Optional (GWT 2.8.2)

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static <T> Optional<T>`	`empty()`
`boolean`	`equals(Object obj)`
`Optional<T>`	`filter(Predicate<? super T> predicate)`
`<U> Optional<U>`	`flatMap(Function<? super T,Optional<U>> mapper)`
`T`	`get()`
`int`	`hashCode()`
`void`	`ifPresent(Consumer<? super T> consumer)`
`boolean`	`isPresent()`
`<U> Optional<U>`	`map(Function<? super T,? extends U> mapper)`
`static <T> Optional<T>`	`of(T value)`
`static <T> Optional<T>`	`ofNullable(T value)`
`T`	`orElse(T other)`
`T`	`orElseGet(Supplier<? extends T> other)`
`<X extends Throwable> T`	`orElseThrow(Supplier<? extends X> exceptionSupplier)`
`String`	`toString()`

public static <T> Optional<T> empty()

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

public static <T> Optional<T> ofNullable(T value)

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

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

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

public <U> Optional<U> flatMap(Function<? super T,Optional<U>> mapper)

public T orElseGet(Supplier<? extends T> other)

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

Class Optional<T>