AVA8-CompletableFuture常用API：runAfterBoth、applyToEither、acceptEither 、runAfterEither 、allOf、anyOf AVA8-CompletableFuture常用API：runAfterBoth、applyToEither、acceptEither 、runAfterEither 、allOf、anyOf1、runAfterBoth ：2个CompletableFuture都执行完后,再执行其它操作package com.example.study.java8.completableFutures.api; import java.util.concurrent.CompletableFuture; public class CompletableFutureAction2 { public static void main(String[] args) throws InterruptedException { //API-- 1、runAfterBoth: 2个都执行完后,再执行其它操作 CompletableFuture.supplyAsync(() -> { System.out.println(Thread.currentThread().getName() + "this is runing 1......"); return 1; }) .runAfterBoth(CompletableFuture.supplyAsync(() -> { System.out.println(Thread.currentThread().getName() + "this is runing 2......"); return 2; }), () -> System.out.println("done")); //为了防止主线程结束后，守护线程被关闭，模拟修改10000毫秒 Thread.sleep(10000); } }输出结果：ForkJoinPool.commonPool-worker-5this is runing 2...... ForkJoinPool.commonPool-worker-19this is runing 1...... done2、 applyToEither：其中一个CompletableFuture执行完，就将结果传给另一个Fuctionpackage com.example.study.java8.completableFutures.api; import java.util.concurrent.CompletableFuture; public class CompletableFutureAction2 { public static void main(String[] args) throws InterruptedException { //API-- 2、runAfterBoth: 其中一个CompletableFuture执行完，就将结果传递到另一个Function中。 CompletableFuture.supplyAsync(()->{ try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName()+"this is one future..."); return 1; }).applyToEither(CompletableFuture.supplyAsync(()->{ try { Thread.sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName()+"this is two future..."); return 2; }), v-> 10 * v ).thenAccept(System.out::println); //为了防止主线程结束后，守护线程被关闭，模拟修改10000毫秒 Thread.sleep(10000); } }输出结果：ForkJoinPool.commonPool-worker-5this is two future... 20 ForkJoinPool.commonPool-worker-19this is one future...3、acceptEither ：其中一个future执行完，就将结果传递到cutomer中消费package com.example.study.java8.completableFutures.api; import java.util.concurrent.CompletableFuture; public class CompletableFutureAction2 { public static void main(String[] args) throws InterruptedException { //API-- 3、acceptEither: 其中一个CompletableFuture执行完，就将结果传递到另一个Function中。 CompletableFuture.supplyAsync(()->{ try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName()+"this is one future..."); return 1; }).acceptEither(CompletableFuture.supplyAsync(()->{ try { Thread.sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName()+"this is two future..."); return 2; }), System.out::println ); //为了防止主线程结束后，守护线程被关闭，模拟修改10000毫秒 Thread.sleep(10000); } }输出结果：ForkJoinPool.commonPool-worker-5this is two future... 2 ForkJoinPool.commonPool-worker-19this is one future...4、runAfterEither :其中一个CompletableFuture执行完，就可以做其它操作了。不会将结果传递，可以做类似其中一个操作完后的消息通知功能。package com.example.study.java8.completableFutures.api; import java.util.concurrent.CompletableFuture; public class CompletableFutureAction2 { public static void main(String[] args) throws InterruptedException { //API-- 4、runAfterEither: 其中一个CompletableFuture执行完，就可以做其它操作了。不会将结果传递，可以做类似其中一个操作完后的消息通知功能。 CompletableFuture.supplyAsync(()->{ try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName()+"this is one future..."); return 1; }).runAfterEither(CompletableFuture.supplyAsync(()->{ try { Thread.sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(Thread.currentThread().getName()+"this is two future..."); return 2; }),()-> System.out.println("其中一个future执行完成") ); //为了防止主线程结束后，守护线程被关闭，模拟修改10000毫秒 Thread.sleep(10000); } }输出结果：ForkJoinPool.commonPool-worker-5this is two future... 其中一个future执行完成 ForkJoinPool.commonPool-worker-19this is one future...5、 allOf： 静态方法，可直接调用。全部future执行完后，再进行消费package com.example.study.java8.completableFutures.api; import java.util.Arrays; import java.util.List; import java.util.concurrent.CompletableFuture; import static java.util.stream.Collectors.toList; public class CompletableFutureAction2 { public static void main(String[] args) throws InterruptedException { //API-- 5、allOf: 静态方法，可直接调用。全部future执行完后，再进行消费 List<CompletableFuture<Double>> completableFutureList = Arrays.asList(1, 2, 3, 4, 5) .stream().map(i -> CompletableFuture.supplyAsync((CompletableFutureAction2::get))) .collect(toList()); CompletableFuture[] completableFuturesArray = completableFutureList.toArray(new CompletableFuture[completableFutureList.size()]); CompletableFuture.allOf(completableFuturesArray).thenRun(()-> System.out.println("所有future执行完成")); //为了防止主线程结束后，守护线程被关闭，模拟修改10000毫秒 Thread.sleep(50000); } }输出结果：0.5653558041825968 0.5720868499613329 0.25643461386243427 0.9522248509043018 0.5483123698045103 所有future执行完成6、anyOf ：静态方法，可直接调用。其中一个future执行完后，就进行消费package com.example.study.java8.completableFutures.api; import java.util.Arrays; import java.util.Collection; import java.util.List; import java.util.Random; import java.util.concurrent.CompletableFuture; import static java.util.stream.Collectors.toList; public class CompletableFutureAction2 { private final static Random RANDOM = new Random(System.currentTimeMillis()); public static void main(String[] args) throws InterruptedException { //API-- 6、anyOf: 静态方法，可直接调用。其中一个future执行完后，就进行消费 List<CompletableFuture<Double>> futureList = Arrays.asList(1, 2, 3, 4, 5) .stream() .map(i -> CompletableFuture.supplyAsync(CompletableFutureAction2::get)) .collect(toList()); CompletableFuture[] futuresArray = futureList.toArray(new CompletableFuture[futureList.size()]); CompletableFuture.anyOf(futuresArray).thenRun(()-> System.out.println("其中一个future已执行完成")); //为了防止主线程结束后，守护线程被关闭，模拟修改10000毫秒 Thread.sleep(50000); } static double get(){ try { Thread.sleep(RANDOM.nextInt(100)); } catch (InterruptedException e) { e.printStackTrace(); } double value = RANDOM.nextDouble(); System.out.println(value); return value; } } 输出结果：0.41392777550489923 其中一个future已执行完成 0.7321854786542472 0.015636586751138104 0.8968276147964326 0.26576407363892185AVA8-CompletableFuture常用API：1、runAfterBoth2、applyToEither 3、acceptEither 4 、runAfterEither 5 、allOf 6、anyOf