有下面类的定义: class Super{ public float getNum(){ return 3.0f; } } public class Sub extends Super{ ; } 下面方法放在画线处会发生编译错误的是()
A:public float getNum(){return 4.0f;}
B:public void getNum(){}
C:public void getNum(double d){}
D:public double getNum(float x){return 4.0d;}
发布时间:2024-03-31 19:49:34