Additional Notes
Why should internal collections not be exposed directly?
Track: Java
Topic: OOP
Focus: Defensive Copying
Java: Defensive Copying
Answer
Exposing internal collections breaks encapsulation and allows external modification.
If internal collections like a list of orders are exposed directly, external code can alter the collection, potentially violating class invariants or causing inconsistent states. By providing access through methods that return copies or unmodifiable views, you maintain control over how the collections are accessed and modified.
If internal collections like a list of orders are exposed directly, external code can alter the collection, potentially violating class invariants or causing inconsistent states. By providing access through methods that return copies or unmodifiable views, you maintain control over how the collections are accessed and modified.
Topics: Defensive Copying Java OOP