class Threadsale implements Runnable{
	int tickets = 100;
	public void run(){
		while(true){
			if(tickets>0){
				System.out.println(Thread.currentThread().getName()+"售车票第"+tickets--+"号");
			}
			else
				System.exit(0);
		}
	}
}
public class DemoThread {
	public static void main(String[] args){
		Threadsale t=new Threadsale();//实例化线程
		Thread t1=new Thread(t,"第1号售票窗口");
		Thread t2=new Thread(t,"第2号售票窗口");
		Thread t3=new Thread(t,"第3号售票窗口");
		Thread t4=new Thread(t,"第4号售票窗口");
		t1.start();
		t2.start();
		t3.start();
		t4.start();
	}
}

运行结果为：

用java多线程操作模拟售票系统