Java基礎--多線程--練習（過隧道）

編寫多線程應用程序，模擬多個人通過一個山洞：

1、 這個山洞每次只能通過一個人，每個人通過山洞的時間為5秒

2、隨機生成10個人，同時准備過此山洞，顯示一下每次通過山洞人的姓名

 

MuThreadTest.java

package com.Train;

public class MuThreadTest{

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //創建一個山洞
        Tunnel tul = new Tunnel();
        
        //十個人過山洞
        Thread p1 = new Thread(tul,"p1");
        Thread p2 = new Thread(tul,"p2");
        Thread p3 = new Thread(tul,"p3");
        Thread p4 = new Thread(tul,"p4");
        Thread p5 = new Thread(tul,"p5");
        Thread p6 = new Thread(tul,"p6");
        Thread p7 = new Thread(tul,"p7");
        Thread p8 = new Thread(tul,"p8");
        Thread p9 = new Thread(tul,"p9");
        Thread p10 = new Thread(tul,"p10");
        p1.start();
        p2.start();
        p3.start();
        p4.start();
        p5.start();
        p6.start();
        p7.start();
        p8.start();
        p9.start();
        p10.start();
    }
}


class Tunnel implements Runnable{
    private int crossedNum = 0;
    //override
    public void run(){
        Cross();
    } 

    //同步函數--同步鎖為this，即main()中創建的tul。 

    public  synchronized void Cross(){
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        crossedNum++;
        System.out.println(Thread.currentThread().getName()+" have Crossed the tunnel !"+" This is "+crossedNum+"th");
        
    }
}

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