OO Pong - need help designing

Question

hi Folks.

Been a loong time since I had to do any OO programming so letting myself back into it gently by trying to write an object oriented version of pong.
I have a Toy class. Ball and Paddle will be sub classes(inherit) the toy class.
I need to implement a draw method. As a paddle is very different from a ball, im wondering if i should have the draw method in the Toy class at all.
Should the draw method be specified in an interface, forcing the ball and paddle to implement their own draw methods?

Jaish Mathews · Answer

Hi Not exactly. Scenario is like this. You have a base class Toy which needs to be extended towards 2 [or more later] other classes. You have 2 [or more later] classes with those class specific implementations. But these classses should keep the parent behaviours. So design should be some thing like this. I used abstract class for that parent as we have the flexibility of default implementation in side it. public interface IToy { } public interface IBall { } public interface IPaddle { } public abstract class Toy : IToy { //Define default draw logic. } public class Ball : Toy IBall { } public class Paddle : Toy IPaddle { }