java 代码实现异步处理任务

public class JavaAnSycTest {

    public static void main(String[] args) {
        ExecutorService executor = Executors.newFixedThreadPool(2);
        CompletableFuture<String> future = CompletableFuture.supplyAsync(new Supplier<String>() {
            @Override
            public String get() {
                System.out.println("task start");
                try {
                    Thread.sleep(6000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                return "task finish";
            }
        }, executor);

        future.thenAccept(e -> System.out.println(e + " ok"));


        System.out.println("main thread is running");

    }
}

代码的执行结果是：主线程继续处理，六秒之后，工作线程的结果才返回

task start
main thread is running
task finish ok

转载至：https://blog.youkuaiyun.com/tangyongzhe/article/details/49851769