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) public 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 20:15:22