package com.chen.test;

import java.util.UUID;

import java.util.concurrent.CountDownLatch;

/**

* @author : chen weijie

* @Date: 2019-09-06 10:40

*/

public class CountDownTest {

public static void main(String[] args) {

CountDownLatch countDownLatch = new CountDownLatch(10);

for (int i = 0; i < 10; i++) {

new Thread(() -> {

synchronized (countDownLatch.getClass()){

System.out.println(UUID.randomUUID().toString());

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

countDownLatch.countDown();

}

}).start();

}

try {

countDownLatch.await();

} catch (InterruptedException e) {

e.printStackTrace();

}

System.out.println(Thread.currentThread().getName() + "执行程序....");

}

}