Object-oriented programming · interview question
How would you explain the real benefit of hiding fields behind meaningful methods in an interview?
Multiple choiceMediumchapter-3-curatedpremiumoopcontrolled-mutation
Answer and explanation
Correct answer
B. The class can validate and control state changes instead of accepting raw assignments
Why
Methods such as reserve(...) or restock(...) make the business action explicit and give the class a place to reject invalid changes. That is much stronger than exposing raw writable fields.
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