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.put.println("Hello"); } } }
A、sleep(1) RuntimeException
B、sleep(1000) InterruptedException
C、Thread.sleep(1) InterruptedException
D、Thread.sleep(1000) InterruptedException