Java多线程卖票安全问题

谁借莪１个温暖的怀抱￠ 2023-01-07 15:25 182阅读 0赞

一共有100张票 3个窗口同时售卖。

Java创建线程 多线程有三种方式 ，这里选着实现Runnable。

/**
     * Created with IntelliJ IDEA.
     *
     * @Auther: zhang
     * @Date: 2021/01/18/11:15
     * @Description:
     */
    public class Ticket implements Runnable {
        int sumTicket = 100;//三个线程公用一个Ticket对象的sunTicket属性。
         Object   object ;
        @Override
        public void run() {
            synchronized (this) { 
               
    //this当前对象，也就是main方法中创建的new Ticket对象,也可以用注释掉的object对象，只要保证三个线程共用一个锁对象就行了
    
    
    
                while (true) {
                    if (sumTicket == 0)
                        break;
                    else {
                        try {
                            Thread.sleep(100);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        System.out.println(Thread.currentThread().getName() + "正在卖第" + sumTicket + "张票" + "剩余" + (sumTicket - 1) + "张票");
                        sumTicket--;
    
                    }
    
                }
            }
    
        }
    }

import com.zhang.MyCallAble;
    import com.zhang.Ticket;
    
    import java.util.List;
    import java.util.concurrent.*;
    
    import static java.util.concurrent.Executors.newFixedThreadPool;
    import static java.util.concurrent.Executors.newSingleThreadExecutor;
    
    /**
     * Created with IntelliJ IDEA.
     *
     * @Auther: zhang
     * @Date: 2020/09/29/22:22
     * @Description:
     */
    public class MyMain {
    
        public static void main(String[] args)  {
            Ticket ticket=new Ticket();
    
            Thread thread1=new Thread(ticket,"窗口一");
            Thread thread2=new Thread(ticket,"窗口二");
            Thread thread3=new Thread(ticket,"窗口三");
            thread1.start();
            thread2.start();
            thread3.start();
    
        }
    }

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