java - java中的继承函数

Question

这个问题已经有答案了:

How to hide (remove) a base class's methods in C#? [duplicate] (10 个回答)

已关闭 8 年前。

Disabling inherited method on derived class 的重复项

这是我的类(class)代码:

class Parent{
    public bool sum(int a){return true;}

    public int mul(int a){return a*a;}

}

还有另外两个扩展父类的类:

class derived extend parent{
    //here this child can see two methods of parent class and
    //I want just see sum method in here and don't see mul method
}
class derivedb extend parent{
//here this child can see two methods of parent class and
//I want here just see mul method.
}

Answer 1

您可以通过将 mul 作为父类中的私有(private)方法来实现。因此 mul 方法仅在 Parent 类内可见

class Parent{
    public bool sum(int a){return true;}

    private int mul(int a){return a*a;}

}