public class ThreadDemo  extends  Thread {
	 int   i=0;
    public static void main(String[] args) {
        
    	ThreadDemo mt1 = new ThreadDemo("Thread a");
    	ThreadDemo mt2 = new ThreadDemo("Thread b");
        
        mt1.setName("线程1-------------- ");
        mt2.setName("线程2--------------- ");
        
        mt1.start();
        mt2.start();
    }
    
    public ThreadDemo(String name) {
    	
    	
    }

    public void run() {
       
        while (true) {
         System.out.println(++i);   
        }
    }

}