Modern Java · interview question
In a value object representing a 'DateRange', how might you enforce that the start date precedes the end date?
Multiple choiceHardchapter-7-curatedpremiummodern-javavalue-objects
Answer and explanation
Correct answer
D. Perform validation in the constructor
Why
Performing validation in the constructor ensures that the DateRange is always created with a valid start and end date. This prevents invalid states from existing and helps maintain the correctness of the application's logic.
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