Optional.Some
public abstract class Optional<T> extends java.lang.Object
Modifier and Type | Class | Description |
---|---|---|
static class |
Optional.Some<T> |
Modifier and Type | Method | Description |
---|---|---|
static <T> Optional<T> |
empty() |
|
abstract T |
get() |
|
boolean |
isDefined() |
|
abstract boolean |
isEmpty() |
|
static <T> Optional<T> |
of(T it) |
|
java.lang.String |
toString() |