Java多线程买票实例

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已于 2022-02-17 13:39:03 修改 · 1.6k 阅读

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#java #多线程 #并发

于 2022-02-17 13:38:17 首次发布

该博客通过创建线程类和买票类，演示了Java多线程并发下购票的实例。20个线程同时进行购票操作，利用join和setPriority实现线程插队和优先级设置。博客详细介绍了线程的命名、启动，以及如何记录购票成功的人名，并在所有线程购票结束后，统计总票数和售出票数。

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线程类

如果还有票，那么总票数-1，售出票数+1；没有票，输出语句

class Tickets implements Runnable{
   
   
    private static final int TICKETSNUMS=10;//总票数，常量

    private static int ticketNums=TICKETSNUMS;//总票数
    private static int ticketSell=1;//售出多少张票

    @Override
    public void run() {
   
   
        try {
   
   
            buy();//购买
        } catch (InterruptedException e) {
   
   
            e.printStackTrace();
        }
    }

    private synchronized void buy() throws InterruptedException {
   
   

        Thread.sleep(100);//等待

        if(ticketNums<=0){
   
   
            System.out.print((ticketSell-1)+"张票已经售光。");
            System.out.println(Thread.currentThread().getName()+"没有抢到票");//公开处刑
        }else{
   
   
            System.out.println(Thread.currentThread().getName()+"抢到了第"+ticketSell+"张票");
            ticketNums--;//总票数-1
            ticketSell++;//售出票数+1
        }

    }
}

买票类

创建20个线程，启动20个线程

class BuyTicket{
   
   

    //创建20个线程买票

    Tickets tickets=new Tickets();

    Thread p1=new Thread(tickets,"P1");
    Thread p2=new Thread(tickets,"P2");
    Thread p3=new Thread(tickets,"P3");
    Thread p4=new Thread(tickets,"P4");
    Thread p5=new Thread(tickets,"P5");
    Thread p6=new Thread(tickets,"P6");
    Thread p7=new Thread(tickets,"P7");
    Thread p8=new Thread(tickets,"P8");
    Thread p9=new Thread(tickets,"P9");
    Thread p10=new Thread(tickets,"P10");
    Thread p11=new Thread(tickets,"P11");
    Thread p12=new Thread(tickets,"P12");