CompletableFuture---1

/** 2  * 两个任务同时并发执行 并有结果值返回 3  * @throws Exception 4  */ 5 public static void test1() throws Exception{ 6 StopWatch stopWatch = new StopWatch(); 7 stopWatch.start(); 8 CompletableFuture<String> future1 = new CompletableFuture<>(); 9 new Thread(new Runnable() {10 @Override11 public void run() {12 try {13 System.out.println("future1");14 Thread.sleep(1500);15 future1.complete("I LOVE YOU1");16 }catch (Exception e){17 System.out.println(e);18 }19 }20 }).start();21 22 23 CompletableFuture<String> future2 = new CompletableFuture<>();24 new Thread(new Runnable() {25 @Override26 public void run() {27 try {28 System.out.println("future2");29 Thread.sleep(2000);30 future2.complete("I LOVE YOU2");31 }catch (Exception e){32 System.out.println(e);33 }34 }35 }).start();36 37 System.out.println(future1.get() + "---" + future2.get());38 stopWatch.stop();39 System.out.println("stopWatch.getTotalTimeMillis():" + stopWatch.getTotalTimeMillis());40 }

返回结果如下图所示：

future1future2I LOVE YOU1---I LOVE YOU2stopWatch.getTotalTimeMillis():2005