[单选题]

( 30 )在程序的下划线处应填入的选项是

public class Test _________{

public static void main(String args[]){

Test t = new Test();

Thread tt = new Thread(t);

tt.start();

}

public void run(){

for(int i=0;i<5;i++){

system.out.println( " i= " +i);

}

}

}

A. ) implements Runnable

B. ) extends Thread

C. ) implements Thread

D. ) extends Runnable

参考答案与解析: