class Sum extends Thread{
	int i=0;
	public void run(){
		System.out.println(Thread.currentThread().getName()+":"+i);
		// getName()ǻֵ߳ķ
		i=i+1;		
		System.out.println(Thread.currentThread().getName()+":"+i);
	}
}
public class TongBu {
	public static void main(String argv[]){
		Sum s = new Sum();
		Thread t1 = new Thread(s);//t1t2ô
		Thread t2 = new Thread(s);		
		t1.start();
		t2.start();
	}
}
