Class Optional<T>

java.lang.Object

japicmp.util.Optional<T>

Direct Known Subclasses:

Optional.Absent, Optional.Present

public abstract class Optional<T>
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	Optional.Absent<T>
private static final class	Optional.Present<T>

Constructor Summary

Constructors

Constructor	Description
Optional()

Method Summary

Modifier and Type	Method	Description
static <T> Optional<T>	absent()
abstract boolean	equals(Object object)
static <T> Optional<T>	fromNullable(T reference)
abstract T	get()
abstract int	hashCode()
abstract boolean	isPresent()
static <T> Optional<T>	of(T reference)
abstract Optional<T>	or(Optional<? extends T> secondChoice)
abstract T	or(T secondChoice)

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Optional

public Optional()

Method Details

isPresent

public abstract boolean isPresent()

get

public abstract T get()

or

public abstract Optional<T> or(Optional<? extends T> secondChoice)

or

public abstract T or(T secondChoice)

hashCode

public abstract int hashCode()

Overrides:

hashCode in class Object

equals

public abstract boolean equals(Object object)

Overrides:

equals in class Object

of

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

fromNullable

public static <T> Optional<T> fromNullable(T reference)

absent

public static <T> Optional<T> absent()