Call a child class method from a parent class object

Question

I have the following classes

class Person {
    private String name;
    void getName(){...}}

class Student extends Person{
    String class;
    void getCl         


        

Answer 1

Why don't you just write an empty method in Person and override it in the children classes? And call it, when it needs to be:

void caluculate(Person p){
  p.dotheCalculate();
}

This would mean you have to have the same method in both children classes, but i don't see why this would be a problem at all.