下列程序的功能是在监控台上每隔一秒钟显示一个字符串 Hello! ,能够填写在程序中下划线位置,使程序完整并能正确运行的语句是【 】public class Test implements Runnable{public static void main(String args[]){Test t=new Test();Thread tt=new Thread(t);tt.start();}public void run(){for(;;){try{;}catch( e){}System.out.println( Hello );}}}
A.sleep(1000) InteruptedException
B.t.sleep(1000) InterruptedException
C.Thread.sleep(1000) RuntimeException
D.Thread.sleep(1000) InterruptedException