Join 与 CountDownLatch 之间的区别_weixin_30564785的博客

Join 与 CountDownLatch 之间的区别

import java.util.concurrent.CountDownLatch;

public class CountDownLatchTest {
    public static CountDownLatch c = new CountDownLatch(2);
    public static void main(String[] args) throws InterruptedException {
        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println(1);
                c.countDown();
                System.out.println(2);
                c.countDown();
            }
        });
        t.start();
        c.await();
        System.out.println(3);
    }
}import java.