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：