package Thread;

//synchronized(同步监视器){
//      需要被同步的代码
//}

class Window3 implements Runnable{
    private int ticket = 100;
    Object obj = new Object();

    @Override
    public void run() {
        while(true){
            //this也可以作为对象
            synchronized(obj){
                if(ticket > 0){

                    try {
                        Thread.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                    System.out.println(Thread.currentThread().getName() + ":卖票，票号为：" + ticket);
                    ticket--;
                }else{
                    break;
                }
            }
        }
    }
}

public class WindowTest3 {
    public static void main(String[] args) {
        Window3 w = new Window3();

        Thread t1 = new Thread(w);
        Thread t2 = new Thread(w);
        Thread t3 = new Thread(w);

        t1.setName("窗口1");
        t2.setName("窗口2");
        t3.setName("窗口3");

        t1.start();
        t2.start();
        t3.start();

    }
}