OOP – Page 16 – Sharp: NCLEX, Java & Python

Java: Invariants and Validation

How does immutability maintain invariants?

How do interfaces enable multiple capabilities in Java?

Why are interfaces crucial for testability and substitution in Java applications?

How would you explain an invariant in an interview?

Why is constructor validation important?

How would you explain an invariant in OOP in an interview?

How does immutability help maintain invariants?

Why validate method inputs?

Why use private fields in a class?

How do invariants affect class design?