java多线程模拟售票

﹏ヽ暗。殇╰゛Y 2023-10-01 16:51 19阅读 0赞

售票类：

package duoxiancheng;
    
    import java.util.concurrent.TimeUnit;
    
    /**
     * @author yeqv
     * @program A2
     * @Classname Ticket
     * @Date 2022/1/28 23:04
     * @Email w16638771062@163.com
     */
    public class Ticket implements Runnable {
        
        //未设置票数，默认为100
        private int num = 100;
    
        public Ticket() {
        
        }
    //获取传入票数
        public Ticket(int num) {
        
            this.num = num;
        }
    
    
        public void run() {
        
            while (true) {
        
                //加锁，当一个进程进入时其他进程阻塞，防止数据出错
                synchronized (this) {
        
                    try {
        
                        //延时1秒
                        TimeUnit.SECONDS.sleep(1);
                    } catch (Exception e) {
        
                        e.printStackTrace();
                    }
                    if (num > 0) {
        
                        System.out.printf("[%s] 售出一张票，剩余%d张票%n", Thread.currentThread().getName(), --num);
                    } else {
        
                        System.out.printf("%n[%s] 票已售完，停止售票。", Thread.currentThread().getName());
                        break;
                    }
                }
                try {
        
                    TimeUnit.SECONDS.sleep(1);
                } catch (Exception e) {
        
                    e.printStackTrace();
                }
            }
        }
    }

测试类：

package duoxiancheng;
    
    
    /**
     * @author yeqv
     * @program A2
     * @Classname Test4
     * @Date 2022/1/28 23:03
     * @Email w16638771062@163.com
     */
    public class Test4 {
        
        public static void main(String[] args) {
        
            //传入票数
            Ticket ticket = new Ticket(20);
            //创建四个新线程并且更名
            Thread thread = new Thread(ticket, "郑州站");
            Thread thread1 = new Thread(ticket, "郑州东站");
            Thread thread2 = new Thread(ticket, "郑州南站");
            Thread thread3 = new Thread(ticket, "郑州北站");
            //启动四个线程
            thread.start();
            thread1.start();
            thread2.start();
            thread3.start();
    
    
        }
    }