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)InterruptedException
B.sleep(1000)InterruptedException
C.Threasleep(1000)RuntimeException
D.Threasleep(1000)InterruptedException