Java 多线程模拟售票系统(转)

package ccb.ticket;

import java.io.File;
import java.util.ArrayList;
/*
功能实现：多线程模拟售票系统
定义一个车票类，车票类拥有票号属性、  车票状态（未售、售出）属性和拥有者(String类型)属性；
    在主线程中定义一个票库（ArrayList数组列表）初始化票库并生产200张票；
定义一个乘客类继承自线程类，有一个名字(String类型)属性， 乘客类每隔10毫秒就去票库中查看有没票，
    如果有票就抢一张过来 （把车票标为售出状态，并把车票的拥有者标为自己的名字）， 每个乘客抢到20张票就停止运行。
在主线程中创建10个乘客类并启动它们（开始抢票）， 要求每个乘客抢到的票不连号，不能多抢或少抢。抢完后打印出每个人抢到的票号。
*/
public class Main {
    //票库
    static ArrayList<Ticket> mTicketList = new ArrayList<Ticket>();

    public static void main(String[] args) {
        for (int i = 0; i < 200; i++) {
            Ticket t = new Ticket();
            t.ticketNum = i + 100;
            mTicketList.add(t);
        }
        Passenger[] passengers = new Passenger[5];
        for (int i = 0; i < 5; i++) {
            passengers[i] = new Passenger("passenger_" + i/*,mTicketList*/);
            passengers[i].start();
        }

        //等待所有乘客结束
        for (int i = 0; i < 5; i++) {
            try {
                passengers[i].join();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        for (int i = 0; i < passengers.length; i++) {
            System.out.print(passengers[i].name + "抢到的票:");
            int tCnt = 0; //抢到的票数
            for (int j = 0; j < mTicketList.size(); j++) {
                Ticket t = mTicketList.get(j);

                if (t != null && t.owner != null && passengers[i] != null) {
                    if (t.owner.equals(passengers[i].name)) {
                        tCnt++;
                        System.out.print(t.ticketNum + ",");
                    }
                }
            }
            System.out.println("总票数：" + tCnt);
        }
    }

}

购票人：

package ccb.ticket;

/**
 * 旅客线程(并发)
 */

public class Passenger extends Thread {
    String name;//名字
    //ArrayList<Ticket> mTicketList ;
    int myTickets = 0;

    public Passenger(String name/*,ArrayList<Ticket> ticketList*/) {
        //mTicketList = ticketList;
        this.name = name;
    }

    @Override
    public void run() {
        //Main.mTicketList.get(0);
        while (myTickets < 20) {
            //开始抢票
            for (int i = 0; i < Main.mTicketList.size(); i++) {
                Ticket t = Main.mTicketList.get(i); //取出第i张票
                synchronized (t) { //synchronized (监视的竞争对象)
                    if (t.saledState == Ticket.STATE_NOT_SALED) {
                        //把车票标为售出状态
                        t.saledState = Ticket.STATE_SALED;
                        //把车票的拥有者标为自己的名字
                        t.owner = this.name;
                        myTickets++;
                        System.out.println(Thread.currentThread().getName() + this.name + " 抢到" + t.ticketNum + "号票");
                        break;
                    }
                }
                /*
                boolean result = checkTicket(t);
                if(result){
                    break;
                }*/
            }

            try {
                sleep(20);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    /*
     * synchronized 默认监视的竞争对象　：　为当前类对象，即this
     */
    public synchronized boolean checkTicket(Ticket t) {
        if (t.saledState == Ticket.STATE_NOT_SALED) {
            t.saledState = Ticket.STATE_SALED; //把车票标为售出状态
            t.owner = this.name; //把车票的拥有者标为自己的名字
            myTickets++;
            System.out.println(this.name + "抢到" + t.ticketNum + "号票");
            return true;
        }
        return false;
    }
}

　　车票：

package ccb.ticket;

public class Ticket {
    public static final boolean STATE_SALED = true;         //售出状态
    public static final boolean STATE_NOT_SALED = false;    //未售出状态

    public int ticketNum = 0;                           //票号
    public boolean saledState = STATE_NOT_SALED;        //初始状态: 未售
    public String owner = null;                         //拥有者
}

　　

　　一个很好的示例，受到了很大的启发！原文出处记不起来了，侵删！