一个java程序，执行之后老是会出现死循环，烦请大神解答

import java.util.Random;
//需求：一个取钱游戏，两个人同时取钱，他们比赛看谁取到的钱多
class Withdraw extends Thread{
public Withdraw(String name){
super(name);
}
//定义一个变量，记录总钱数
static int money=5000;
Random random=new Random();
static int a=0;
//定义一个变量，记录对象总共取到了多少钱
int moneyWithdrawed=0;
//重写run方法
public void run(){
while(true){
synchronized("取钱过程"){
if(money>0){
a=random.nextInt(1000);
if(a>money){
continue;
}
System.out.println(this.getName()+"取到了"+a+"元");
moneyWithdrawed+=a;
money-=a;
}else{
break;
}
}
}
System.out.println(Thread.currentThread().getName()+"总共取到了"+moneyWithdrawed+"元");
}
}
public class Demo8 {

public static void main(String[] args) {
Withdraw wife=new Withdraw("老婆");
Withdraw husband=new Withdraw("老公");

wife.start();
husband.start();
//
while(true){
if(Withdraw.money==0){
if(wife.moneyWithdrawed>husband.moneyWithdrawed){
System.out.println("老婆赢了");
break;
}else{
System.out.println("老公赢了");
break;
}
}
}
}

}