代码和视频一样，为什么控制台没有输出

package com.xuanxuan;

/**

 * 使用Thread创建线程测试卖票

 * @author Administrator

 *

 */

class MyThread extends Thread{

private int ticketsCount=4;

private String name;

public MyThread(String name){

this.name=name;

}

//重写run()方法

public void run(){

while(ticketsCount>0){}

ticketsCount--;

System.out.println(name+"卖了一张票，还剩"+ticketsCount+"张票");

}

}

public class ThreadText {

public static void main(String[] args) {

// TODO Auto-generated method stub

//创建三个线程，模拟三个窗口卖票

Thread st1=new MyThread("小一");

Thread st2=new MyThread("小二");

Thread st3=new MyThread("小三");

//启动线程

st1.start();

st2.start();

st3.start();

}

}