OOP design questions

[sendy]

hi guys, i want to ask questions for OOP designs, i want to practice to make online shop
i have some designs in my mind:
- Product class as base class for other specific product, it has(all protected) id,price, get_id(), get_price()
- Specific product class, example T-shirt, it will extends Product, it has(protected) size,colour.

the question is:
-should i use interface like Sellable (it will have methods that like get_stock(), add_stock(), etc) or should i just add the methods(get_stock(), add_stock()) in the parent class(Product class) ??

please give me some tips, i will really appreciate it.

note:sorry for the bad english.

[PreetiGarg]

Use
methods(get_stock(), add_stock())
Its useful for you...

[sendy]

Use
methods(get_stock(), add_stock())
Its useful for you...

erm sorry sir, but should i add those methods using interface or just add it in the parent class?

[simplypixie]

I think you are confusing things for yourself - you shouldn't have one class per product, that is not the idea of OOP. As you already have a product class, then run all your methods for anything product related within that class.

[sendy]

I think you are confusing things for yourself - you shouldn't have one class per product, that is not the idea of OOP. As you already have a product class, then run all your methods for anything product related within that class.

Okay, i think i will add those methods in the parent class(Product class) and then make a child for Product class like 'Shoes class' , 'Shirt class', etc