线程买票------同步代码块方式

package com.test;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

public class test01 {
    public static void main(String[] args) throws InterruptedException {

        MyThread task1=new MyThread();
        MyThread task2=new MyThread();


        new Thread(task1,"窗口1").start();

        new Thread(task2,"窗口2").start();

        new Thread(task1,"窗口3").start();

        new Thread(task2,"窗口4").start();




    }

}

实现runable接口的类

package com.test;

public class MyThread implements Runnable {
    private int tickets=10;

    Object lock=new Object();
    public void run() {

        while (true){

            synchronized (lock) {//注意把公共资源放在同步代码块中

                try {

                    Thread.sleep(10);//休眠10毫秒

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

                if (tickets > 0) {

                    System.out.println(Thread.currentThread().getName() + "---卖出的票" + tickets--);

                } else {

                    break;

                }


            }
            }
    }


}