Core Java – Page 41 – Sharp: NCLEX, Java & Python

Java: Code Reading and State Safety

What is immutability in Java?

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

Why is using setters cautiously important?

Why does private fields in a class matter in practice?

What issues arise from compile-safe but runtime-unsafe designs?

How would you explain a common mistake when refactoring procedural scripts into objects in an interview?

How would you explain an invariant in object design in an interview?

Why is it a problem if a class has many public fields?

How can immutability enhance object safety?

Why does refactoring procedural code into classes help in practice?