OOP – Page 5 – Sharp: NCLEX, Java & Python

Java: Polymorphism

Why might you choose an interface over an abstract class?

Why can a class with too many responsibilities become a real problem?

How does encapsulation aid in maintaining object invariants?

Why should a CartItem class reference a Product rather than copy its details?

Why does encapsulation in OOP matter in practice?

Why is it important to keep behavior with the data it operates on?

How would you explain a potential pitfall of exposing an object's internal list in an interview?

When should a class method modify an object's state?

How does polymorphism enhance flexibility in Java applications?

What is immutability and why is it beneficial?