Java – Page 100 – Sharp: NCLEX, Java & Python

Java: Object Responsibility

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 does it mean for a list to be unmodifiable?

Why should validation be part of the constructor in some cases?

Why should fields in a class be private?

Why does a constructor in maintaining class invariants matter in this design?