public class Optional<T> extends Object
static class
Optional.NotPresentException
static <T> Optional<T>
absent()
fromNullable(T t)
T
get()
boolean
isPresent()
of(T t)
or(T alternative)
rx.Observable<T>
toObservable()
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public boolean isPresent()
public T get()
public T or(T alternative)
public rx.Observable<T> toObservable()
public static <T> Optional<T> fromNullable(T t)
public static <T> Optional<T> of(T t)
public static <T> Optional<T> absent()
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