( 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;i5;i++){system.out.println( " i= " +i);}}}A ) implements RunnableB ) extends ThreadC ) implements ThreadD ) extends Runnable

( 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


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