class MyThread extends Thread{    private int ticketsCont=5; //一共有5张火车票    private String name; //窗口, 也即是线程的名字    public MyThread(String name){        this.name=name;    }    @Override    public void run(){        while(ticketsCont>0){            ticketsCont--; //如果还有票，就卖掉一张票            System.out.println(name+"卖掉了1张票，剩余票数为:"+ticketsCont);        }    }}public class TicketsThread{    public static void main(String args[]){        //创建三个线程，模拟三个窗口卖票        MyThread mt1=new MyThread("窗口1");        MyThread mt2=new MyThread("窗口2");        MyThread mt3=new MyThread("窗口3");        //启动三个线程，也即是窗口，开始卖票        mt1.start();        mt2.start();        mt3.start();    }}

class MyThread2 implements Runnable{    private int ticketsCont=5; //一共有5张火车票    @Override    public void run(){        while(true){            synchronized(this){                if(ticketsCont<=0){                    break;                }                ticketsCont--; //如果还有票，就卖掉一张票                System.out.println(Thread.currentThread().getName()+"卖掉了1张票，剩余票数为:"+ticketsCont);                    /*try{                        Thread.sleep(50);  //通过阻塞程序来查看效果                    }                    catch(Exception e){                        System.out.println(e);                    }*/            }        }    }}public class TicketsRunnable{    public static void main(String args[]){        MyThread2 mt=new MyThread2();        //创建三个线程来模拟三个售票窗口        Thread th1=new Thread(mt,"窗口1");        Thread th2=new Thread(mt,"窗口2");        Thread th3=new Thread(mt,"窗口3");        //启动三个线程，也即是三个窗口，开始卖票        th1.start();        th2.start();        th3.start();    }}