面向对象程序的设计题

Question

实现一个模拟的列车售票系统用六个窗口出售500张车票打印处每个售票窗口的出票号码和出票时间

Answer 1

import java.util.Date;

public class Ticket implements Runnable{

    //车票的数量
    int count=500;

    @Override
    public void run() {
        while(count>0) {
            try {
                /*同步：synchronized（锁），锁就是一个对象名称，通常可以直接传this
                 * 在同步语句块中的语句，确保在同一时刻只能由一个线程执行(互斥)
                 * */
                synchronized (this) {
                    System.out.println("窗口名称："+Thread.currentThread().getName()+",车票编号："+count+"，销售时间："+ new Date().toLocaleString());
                    count--;

                }
                Thread.sleep(10);
            }catch(Exception e) {
                e.printStackTrace();
            }
        }
    }
}

public class TicketTest {

    public static void main(String[] args) {
        
        Ticket ticket = new Ticket();
        //模拟4个售票窗口
        Thread t1 = new Thread(ticket,"窗口1：");
        Thread t2 = new Thread(ticket,"窗口2：");
        Thread t3 = new Thread(ticket,"窗口3：");
        Thread t4 = new Thread(ticket,"窗口4：");
        Thread t5 = new Thread(ticket,"窗口5：");
        Thread t6 = new Thread(ticket,"窗口6：");
        t1.start();
        t2.start();
        t3.start();
        t4.start();
        t5.start();
        t6.start();
    }
}