java 多线程的唤醒

package TestThread.ThreadSynchronized.TestInterruptedException;

public class InterruptDemo {
    public static void main(String[] args) {
        TestWait t = new TestWait("线程1");
        TestWait t1 = new TestWait("线程2");
        Test te = new Test("线程3", t);
        t.start();
        t1.start();
        te.start();
    }
}

class TestWait extends Thread {
    String name;

    public TestWait(String name) {
        super(name);
        this.name = name;
    }

    public synchronized void run() {
        for (int i = 0; i < 5; i++) {
            if (i == 4) {
                try {
                    // 等待之后立即释放当前锁，并且进入等待池中等待唤醒
                    // 当等待池中的线程被唤醒后，再次执行此语句之后的语句
                    this.wait();
                    System.out.println(Thread.currentThread().getName() + ":我还没有被执行到！");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            System.out.println(Thread.currentThread().getName() + ":当前的值为--->" + i);
        }
    }
}

class Test extends Thread {
    private TestWait testwait;
    String name;

    public Test(String name, TestWait testwait) {
        super(name);
        this.name = name;
        this.testwait = testwait;
    }

    public void run() {
        synchronized (testwait) {
            testwait.notify();// 调用此方法后，指定的对象将被唤醒，唤醒之后将继续执行后面的操作
        }
    }
}

执行的结果为：