用多线程模拟电影售票过程 java

实训目的：多线程的实现、线程同步

实训要求：总票数和售票窗口数由键盘输入，用每个线程处理一个窗口的售票

代码：

package exam3;

import java.util.Scanner;

class TicketWindow implements Runnable//接口
{
	private int tickets;
	void get(int a)
	{
		this.tickets= a;
	}
	public void run()
	{
		while(true)
		{
			synchronized("") {//加一个锁，防止死循环
			if(tickets>0)
			{
				System.out.println(Thread.currentThread().getName()
						+"正在发售第"+tickets--+"张票");//chu_yu_xuan
				try {Thread.sleep(100);}catch(InterruptedException e) {e.printStackTrace();;}//延时100ms
			}
			else break;
			}
		}
	}
}

public class Sale 
{
	public static void main(String[] args)
	{
		int tickets,i ;
		System.out.println("请输入票数：");
		
		@SuppressWarnings("resource")
		Scanner s =new Scanner(System.in);
		tickets= s.nextInt();
		System.out.println("请输入窗口数：");
		i= s.nextInt();
		TicketWindow tw = new TicketWindow();
		tw.get(tickets);
		for(int j=0;j<i;j++)
		{
			new Thread(tw,"窗口"+(j+1)).start();
		}
	}

}