public class Java9BackportUtils
extends java.lang.Object
| コンストラクタと説明 | 
|---|
| Java9BackportUtils() | 
| 修飾子とタイプ | メソッドと説明 | 
|---|---|
| static <T,U,A,R> java.util.stream.Collector<T,?,R> | flatMapping(java.util.function.Function<? super T,? extends java.util.stream.Stream<? extends U>> mapper,
           java.util.stream.Collector<? super U,A,R> downstream) | 
| static <T> void | ifPresentOrElse(java.util.Optional<T> optional,
               java.util.function.Consumer<? super T> action,
               java.lang.Runnable emptyAction) | 
public static <T,U,A,R> java.util.stream.Collector<T,?,R> flatMapping(java.util.function.Function<? super T,? extends java.util.stream.Stream<? extends U>> mapper,
                                                                      java.util.stream.Collector<? super U,A,R> downstream)
public static <T> void ifPresentOrElse(java.util.Optional<T> optional,
                                       java.util.function.Consumer<? super T> action,
                                       java.lang.Runnable emptyAction)