public class Optional<V>
extends java.lang.Object
| Modifier and Type | Method and Description |
|---|---|
static <V> Optional<V> |
empty() |
V |
get() |
boolean |
isPresent() |
static <V> Optional<V> |
of(V value) |
static <V> Optional<V> |
ofNullable(V value) |
V |
orElse(V other) |
V |
orElseThrow(java.lang.RuntimeException exception) |