Object-oriented programming · interview question
Why is it beneficial to validate input data in both constructors and setter methods?
Multiple choiceHardchapter-3-curatedpremiumoopinvariants-and-validation
Answer and explanation
Correct answer
D. To ensure class invariants are maintained at all times
Why
Validating input data in both constructors and setter methods ensures that class invariants are maintained at all times. The constructor validates data upon object creation, while setters validate any updates, preventing invalid states throughout the object's lifecycle.
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