Make a project "Online Shopping Management System" which can include customer details and discount of price and all products details.

$$ At least three classes are required $(1$ super class and $2$ sub classes.

$$ Must Create two different packages and use at least one of those

$$ In your class design you must have to have the reflection of the concept of Encapsulation, Method

overloading, Method overriding, and must use Abstraction.

$[$In method overriding there should have some mathematical calculation not just a random print

statement$]$

$$ Exception must be handled for any abnormal$/$exceptional cases. At least $1$ custom exception must

be there.