Call subclass's method from its superclass

Question

I have two classes, named Parent and Child, as below. Parent is the superclass of Child I can call a method of the super

Answer 1

Technically you can do it. But I suggest you to alter your design. You can declare a protocol and make your child class adopt that protocol. Then you can have to check whether the child adopts that protocol from the super class and call the method from the super class.