CompletableFuture并发任务执行用法

@Test
    void testFuture() throws ExecutionException, InterruptedException {
        CompletableFuture<String> future1 = CompletableFuture.supplyAsync(()->task1());
        CompletableFuture<String> future2 = CompletableFuture.supplyAsync(()->task2());

        log.info("并行执行");
        CompletableFuture<Void> allFutures = CompletableFuture.allOf(future1,future2);
        allFutures.get();
        log.info(future1.get() + "result " + future2.get());

    }

    String task1(){
        try {
            Thread.sleep(4000);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        return "task1 completed";
    }

    String task2(){
        try {
            Thread.sleep(4000);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        return "task2 completed";
    }

执行结果：文章来源地址https://uudwc.com/A/Oqbo2

12:10:32.855 [main] INFO  c.c.b.e.c.Test - [testFuture:247] - 并行执行
12:10:36.857 [main] INFO  c.c.b.e.c.Test - [testFuture:250] - task1 completed result task2 completed