public class MyThread extends Thread{
	public void run(){	
		for(int a=0;a<50;a++){
		
		try{	Thread.sleep(100);}catch(Exception e){}
		System.out.println(Thread.currentThread().getName()+" "+a);
		}
	        }
	public static void main(String args[])throws Exception	{
		MyThread t1=new MyThread();
		t1.start();	//啟動(dòng)線程，這是什么意思，
		t1.run();
											}
											}