Replace-Conditional-with-Polymorphism

● To talk about refactoring of code

● If we have a class full of Male & female students ,they went to pee we want to present that in a code. it will be something like that.

Example using switch case:

class Human {
  String goPee() {
    switch (Pee) {
      case Male:
        return "Stand Up";
      case Female:
        return "Sit Down";
    }
  }
}

● To refoctor this code correctly think of it like we have more than ONE if condition, In real life applications use
more than 8 conditions, I have seen this before.

● It was very hard to understand every if condition.

● To reduce the code & make it maintianble, we could refactor it.

First create abstract class called human

abstract class Human {
  abstract String goPee();
}

In this abstract method when you want to use it, you must inherate it from class Human then use it, like that

Create class for Male

public class Male extends Human{
    @Override
    public String goPee(){
        return ("Stand Up");
    }
}

class for Female

public class Female extends Human{
    @Override
    public String goPee(){
        return ("Sit Down");
    }
}

To check it for all the classroom

Main Method

public static void main(String[] args){
    ArrayList<Human> group = new ArrayList<Human>();
    group.add(new Male());
    group.add(new Female());
    // ... add more...

    // tell the class to take a pee break
    for (Human person : group) person.goPee();
}