请阅读下面程序 public class ThreadTest{ public static void main(String args[])throws Ex
请阅读下面程序 public class ThreadTest{ public static void main(String args[])throws Ex- ception{ int i=0; Hello t=new Hello; ; while(true){ System.Out.println("Good Morning"+i++): if(i= =2t.isAlive){ System.out.println("Main waiting for Hel- lo!"); join;//等待t运行结束 } if(i= =5)break;} } } class Hello extends Thread{ int l; public void run{ while(true)(System.Out.println("Hell0"+i++); if(i= =5)break;)))
A.t.sleep
B.t.yield
C.t.interrupt
D.t.start