Java – Page 140 – Sharp: NCLEX, Java & Python

Java: Access Modifiers and Visibility

What are the tradeoffs of using package-private visibility?

How can public fields lead to design issues?

Why should we avoid exposing mutable objects through getters?

Why use private fields with public methods in Java classes?

Why introduce classes after Chapter 1 style code?

How would you explain a Java class in an interview?

Why use constructors in classes?

How should you decide if data belongs in 'Product', 'CartItem', or 'Customer'?

How does encapsulation improve a basic product model?

How do abstract classes enforce a contract for subclasses?