java併發編程之Thread和Runnable之實例應用（三）

原創

XiaoCha1994

2020-02-21 16:26

1.Thread版買票：

class MyThread extends Thread{  
    
    private int ticket = 10;  
    private String name;  
    public MyThread(String name){  
        this.name =name;  
    }  
    public void run(){  
        for(int i =0;i<500;i++){  
            if(this.ticket>0){  
                System.out.println(this.name+"賣票---->"+(this.ticket--));  
            }  
        }  
    }  
}

public class ThreadDemo {

    public static void main(String[] args) {  
        MyThread mt1= new MyThread("一號窗口");  
        MyThread mt2= new MyThread("二號窗口");  
        MyThread mt3= new MyThread("三號窗口");  
        mt1.start();  
        mt2.start();  
        mt3.start();  
    }
    
}

結果：

1.Runnable版買票：

public class MyRunnable implements Runnable{  
    private int ticket =10;  
    private String name;  
    public void run(){  
        for(int i =0;i<500;i++){  
            if(this.ticket>0){  
                System.out.println(Thread.currentThread().getName()+"賣票---->"+(this.ticket--));  
            }  
        }  
    }  
}

public class RunnableDemo {

	public static void main(String[] args) {  
         // TODO Auto-generated method stub  
         //設計三個線程  
         MyRunnable mt = new MyRunnable();  
         Thread t1 = new Thread(mt,"一號窗口");  
         Thread t2 = new Thread(mt,"二號窗口");  
         Thread t3 = new Thread(mt,"三號窗口");  
         t1.start();  
         t2.start();  
         t3.start();  
    }
	
}

結果：【顯示的結果次數多了其實會有問題的，這裏其實是需要加入同步操作（即互斥鎖）來保持線程操作的原子性，這後面在說。】