How to extend a class using another constructor?

Question

It’s hard for me to extend a person’s class to a patient

I have a Person class with a constructor similar to

  public Person(String firstname,String surname) {
        fFirstname=firstname;
        fSurname=surname;
    }

Then i have a class of patients

public class Patient expands Personality

I want to have a constructor for a patient that looks something like

public Patient(String hospNumber) {
    fFirstname = lookup(hospNumber,"firstname");
    fSurname = lookup(hospNumber,"surname");
}

However, I am getting a complaint about the need to create a Patient (String, String) constructor. I understand why this is so, but I can’t understand how to expand the class of a person for a patient.

Answer 1

Just pass the result of these two method calls to the constructor super:

public Patient(String hospNumber) {
    super(lookup(hospNumber,"firstname"), lookup(hospNumber,"surname"));
}

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Answer 2

Person class

public Person() {

}

Person super 2-arg

public Patient(String hospNumber) {
    super(lookup(hospNumber,"firstname"), lookup(hospNumber,"firstname"));
}

Answer 3

.

public Patient(String hospNumber) {
   super(lookup(hospNumber,"firstname"), lookup(hospNumber,"surname"));
}

lookup , . :

public Patient(String hospNumber, String firstname, String surname) {
  super(firstname,surname);
}

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