多线程经典问题卖票

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package com.woniuxy.java2;   public class MyThreadTest {       public static int ticket = 100;     public static Object lock = new Object();     public static void main(String[] args) {                   SaleTicket1 s1 = new SaleTicket1();         Thread t1 = new Thread(s1,"窗口一");         Thread t2 = new Thread(s1,"窗口二");         Thread t3 = new Thread(s1,"窗口三");                   t1.start();         t2.start();         t3.start();     } }   /**  *  * @author naruto  *  */ class SaleTicket implements Runnable{             @Override     public void run() {         String name = Thread.currentThread().getName();         while(true) {             synchronized (MyThreadTest.lock) {                 if(MyThreadTest.ticket<=0) {                     break;                 }                               MyThreadTest.ticket--;                 System.out.println(name+"卖了1张票,还剩下"+MyThreadTest.ticket);             }                       }     }       }     /**  * 使用同步方法  */   class SaleTicket1 implements Runnable{               @Override     public void run() {                   while(MyThreadTest.ticket>0) {             fun();                       }     }           public synchronized void fun() {         String name = Thread.currentThread().getName();         if(MyThreadTest.ticket<=0) {             return;         }         MyThreadTest.ticket--;         System.out.println(name+"卖了1张票,还剩下"+MyThreadTest.ticket);     } }