线程交替打印奇偶

class TestThread implements Runnable {
private int i = 1;

	public void run() {
		while (true) {
			synchronized (this) {
				notify();
				System.out.println(Thread.currentThread().getName() + ":" + i++);
				try {
					wait();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				if (i == 101) {
					notify();//线程2执行完输出100后,进行等待池,线程1被唤醒拿到锁从wait()后面开始执行,此时i=101,需要先把线程2从等待池唤醒再结束循环
					break;
				}
			}
		}
	}
}

public class Test7 {
	public static void main(String[] args) {
		TestThread t = new TestThread();
		Thread t1 = new Thread(t);
		Thread t2 = new Thread(t);

		t1.setName("线程1");
		t2.setName("线程2");

		t1.start();
		//把线程2延迟一会开启,为了始终让线程1先拿到锁
		try {
			Thread.sleep(5);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		t2.start();
	}
}