Defensive Copying – Sharp: NCLEX, Java & Python

Java: Defensive Copying

Why is it crucial to validate inputs when setting internal collections?

How would you explain a common pitfall of exposing mutable class fields in an interview?

Why use getter methods instead of making fields public?

Why is encapsulation a key principle in Java?

How does List.copyOf enhance encapsulation?

What risks do mutable collections pose if shared directly?

Why is defensive copying crucial for internal structures?

How would you explain the tradeoff of using unmodifiable views in an interview?

How can you avoid collection leaks in a class design?

What are the risks of shared mutable state in multi-threaded applications?