2.示例
CompletableFuture<Integer> future1 = CompletableFuture.supplyAsync(new Supplier<Integer>() {@Overridepublic Integer get() {try {TimeUnit.SECONDS.sleep(1);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("第一阶段：1");return 1;}});CompletableFuture<Integer> future2 = CompletableFuture.supplyAsync(new Supplier<Integer>() {@Overridepublic Integer get() {try {TimeUnit.SECONDS.sleep(2);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("第二阶段：2");return 2;}});future1.runAfterBoth(future2, new Runnable() {@Overridepublic void run() {System.out.println("上面两个任务都执行完成了 。");}});【5】anyOf
1.说明
//anyOf 方法的参数是多个给定的 CompletableFuture，当其中的任何一个完成时，方法返回这个 CompletableFuture 。public static CompletableFuture<Object> anyOf(CompletableFuture<?>... cfs)2.示例
Random random = new Random();CompletableFuture<String> future1 = CompletableFuture.supplyAsync(() -> {try {TimeUnit.SECONDS.sleep(random.nextInt(5));} catch (InterruptedException e) {e.printStackTrace();}return "hello";});CompletableFuture<String> future2 = CompletableFuture.supplyAsync(() -> {try {TimeUnit.SECONDS.sleep(random.nextInt(1));} catch (InterruptedException e) {e.printStackTrace();}return "world";});CompletableFuture<Object> result = CompletableFuture.anyOf(future1, future2);【6】allOf
1.说明
//allOf方法用来实现多 CompletableFuture 的同时返回 。public static CompletableFuture<Void> allOf(CompletableFuture<?>... cfs)2.示例
CompletableFuture<String> future1 = CompletableFuture.supplyAsync(() -> {try {TimeUnit.SECONDS.sleep(2);} catch (InterruptedException e) {e.printStackTrace();}System.out.println("future1完成！");return "future1完成！";});CompletableFuture<String> future2 = CompletableFuture.supplyAsync(() -> {System.out.println("future2完成！");return "future2完成！";});CompletableFuture<Void> combindFuture = CompletableFuture.allOf(future1, future2);try {combindFuture.get();} catch (InterruptedException e) {e.printStackTrace();} catch (ExecutionException e) {e.printStackTrace();}【4】CompletableFuture常用方法总结：
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