Modern Java · interview question
Why do teams use a constructor within a value object to enforce invariants in production code?
Multiple choiceMediumchapter-7-curatedpremiummodern-javavalue-objects
Answer and explanation
Correct answer
B. It ensures that all instances are valid upon creation.
Why
By enforcing invariants within a constructor, you ensure that any instance of the value object is valid from the moment it is created. This reduces the risk of invalid states and increases the reliability of the domain model.
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