异步调用

package com.qi.demo01.future;

/**
 * @author zjq
 * @date 2020/3/30 13:15
 */

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

/**
 * 异步调用  （类似于AJAX）CompletableFuture
 * 异步执行
 * 成功回调
 * 失败回调
 */
public class futureDemo {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        // 发起一个请求
        //没有返回值的runSync异步回调
        CompletableFuture<Void> completableFuture = CompletableFuture.runAsync(()->{
            try {
                TimeUnit.SECONDS.sleep(2);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName()+"runAsync=》Void");
        });

        System.out.println("先执行这个");

        completableFuture.get();

    }
}

//运行结果：
先执行这个
ForkJoinPool.commonPool-worker-1runAsync=》Void