Java – Page 300 – Sharp: NCLEX, Java & Python

Java: Code Reading and State Safety

Why is it problematic to mix public fields and methods in a class?

How can a developer refactor a class to improve encapsulation?

What are compile-safe but runtime-unsafe designs?

How can exposing mutable static fields be problematic?

What is immutability in Java?

How would you explain a safer approach to handle mutable collections in a class in an interview?

How do methods improve over direct field access?

Why does refactoring procedural code into classes help in practice?

Why should you avoid many public fields in a class?

Why define a class for a product in an e-commerce application?