Modern Java · interview question
How would you explain the design benefit of wrapping a raw string in a value object like EmailAddress in an interview?
Multiple choiceMediumchapter-7-curatedpremiummodern-javavalue-objects
Answer and explanation
Correct answer
A. It centralizes validation and expresses domain intent clearly.
Why
A value object turns a loose primitive into a named domain concept. That gives one place for invariants like non-null and format checks and makes method signatures harder to misuse.
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