Object-Oriented Programming · Question 16 · Easy
Object-Oriented Programming question 16
A Logger class keeps a list of log entries in a private field and offers only addEntry() and getEntries() (which returns a read-only copy). Which OOP principle does this design mainly demonstrate?
- Inheritance
- Polymorphism
- Encapsulation
- Multiple dispatch
Answer and explanation
Answer: C. Encapsulation
Explanation: Hiding the field and allowing access only through controlled methods is encapsulation: the class protects its own state. No subclassing (inheritance) or overriding (polymorphism) is involved.
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