三个人排队买票的多线程问题

liuzheng_jz 2014-03-11 04:54:58

程序运行结果只打印了“张某拿20，找15,给其放场券”为什么其它两个线程没有运行或是没有被唤醒呢？

public class TicketsTest {
public static void main(String[] args) {
// TODO Auto-generated method stub
//启动三个买票线程
new Thread(new ZhangShanThread(new Tickets())).start();
new Thread(new LisiThread(new Tickets())).start();
new Thread(new ZhaoliuThread(new Tickets())).start();
}

}

public class Tickets {
private int Tickets=1;

public synchronized void zhangshan()
{
if(Tickets==3||Tickets==2)
{
try{
wait();
}catch(InterruptedException e){}

}
System.out.println("张某拿20，找15,给其放场券");
Tickets++;
notify();
}

public synchronized void lisi()
{
if(Tickets==3||Tickets==1)
{
try{
wait();
}catch(InterruptedException e){}

}
System.out.println("李某拿15找回10块,给其放场券");
Tickets++;
notify();
}

public synchronized void zhaoliu()
{
if(Tickets==1||Tickets==2)
{
try{
wait();
}catch(InterruptedException e){}

}
System.out.println("赵某5块刚好,给其放场券");
//Tickets++;
notify();
}
}
//三个线程
public class ZhangShanThread implements Runnable {
private Tickets t=null;
public ZhangShanThread(Tickets t)
{
this.t=t;
}
public void run()
{
t.zhangshan();
}
}
public class LisiThread implements Runnable {
private Tickets t=null;
public LisiThread(Tickets t)
{
this.t=t;
}
public void run()
{
t.lisi();
}
}
public class ZhaoliuThread implements Runnable {
private Tickets t=null;
public ZhaoliuThread(Tickets t)
{
this.t=t;
}
public void run()
{
t.zhaoliu();
}
}

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