给定如下Java代码,下列哪个选项可以加入到Sub类中,并能保证编译正确。 class Super{ public float getNum(){ return 3.0f; } } public class Sub extends Super{ [br][/br] }
选项:
A:public float getNum(){ return 4.0f;}
B:public void getNum(){}
C:public getNum(double d){}
D:public double getNum(float d) {return 4.0d;}
发布时间:2024-03-31 20:15:07