多线程经典问题卖票

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);
	}
}