package practice5;

/**

* 5、制作兩個線程對象，要求用同步塊的方式使第一個線程運行2次，

* 然后將自己阻塞起來，喚醒第二個線程，第二個線程再運行2次，

* 然后將自己阻塞起來，喚醒第一個線程 ，兩 個線程交替執(zhí)行。

* @author Administrator

*

*/

public class Test {

public static void main(String[] args) {

ThreadA t = new ThreadA();

Thread t1 = new Thread(t);

Thread t2 = new Thread(t);

t1.setName("線程一");

t2.setName("線程二");

t1.start();

t2.start();

}

}

class ThreadA implements Runnable {

int num = 1;

public void run() {

while (true) {

synchronized (this) {

notify();

if (num >0) {

try {

Thread.currentThread().sleep(10);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println(Thread.currentThread().getName() + "\t運行第一次 " );

num++;

} else {

break;

}

if (num > 0) {

try {

Thread.currentThread().sleep(10);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

System.out.println(Thread.currentThread().getName() + "\t運行第二次" );

num++;

} else {

break;

}

try {

wait();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

}