一个好玩的线程调度Join

可以让线程之间相互等待到结束

public class LocalTest {

    public static void main(String[] args) {
        Thread thread = Thread.currentThread();
        for (int i = 0; i <= 10; i++) {
            thread = new ThreadTest(thread);
            thread.start();
        }
    }

    static class ThreadTest extends Thread {

        Thread thread;

        public ThreadTest(Thread thread) {
            this.thread = thread;
        }

        @Override
        public void run() {
            System.out.println(Thread.currentThread().getName() + " is Running");
            try {
                System.out.println("current thread" + thread.getName());

                thread.join();
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName() + " is ending");
        }
    }

}

除开使用countDownLatch的方式还可以使用join的技术，等待线程结束main才结束。

public class LocalTest {

    public static void main(String[] args) throws InterruptedException {
        Thread thread = Thread.currentThread();
        for (int i = 0; i <= 10; i++) {
            thread = new ThreadTest(Thread.currentThread());
            thread.start();
            //等待所有线程结束
            thread.join();
        }

    }

    static class ThreadTest extends Thread {

        Thread thread;

        public ThreadTest(Thread thread) {
            this.thread = thread;
        }

        @Override
        public void run() {
            System.out.println(Thread.currentThread().getName() + " is Running");
            try {
                System.out.println("current thread" + thread.getName());

//                thread.join();
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName() + " is ending");
        }
    }
}