带你玩转java多线程系列 二 Thread 和 Runnable

public class teach1 {

    public static void main(String[] args) {

        Model model = new Model();

        new Thread(model).start();

        new Thread(model).start();

    }

}

class Model implements Runnable{

    int num = 20;

 

    @Override

    public void run() {

        // TODO Auto-generated method stub

        while(num>0){

            System.out.println(Thread.currentThread().getName()+" "+num);

            num--;

        }

    }

}

class Model extends Thread{

    int num = 20;

 

    @Override

    public void run() {

        // TODO Auto-generated method stub

        while(num>0){

            System.out.println(Thread.currentThread().getName()+" "+num);

            num--;

        }

    }

}