在下面程序的第6行补充上下列哪个方法,会导致在编译过程中发生错误?1) class Super{2) public float getNum(){3) return 3.0f;4) }}5) pubhc class Sub extends Super{6)7) }
选项:
A:public float getNum(){retun 4.0f;}
B:public void getNum(){}
C:public void getNum(double d){}
D:public double getNum(float d){ retun 4.0f ;}
发布时间:2024-03-31 19:49:34