Spring Core · interview question
Why is returning a JPA entity directly from a controller risky?
Multiple choiceHardchapter-9-curatedpremiumspring-coredtos-and-entities
Answer and explanation
Correct answer
B. It couples the public API to internal persistence shape and can leak unwanted fields
Why
Entities often contain persistence concerns or sensitive fields that should not leak outward. DTOs give you a stable API contract that is decoupled from internal schema and ORM decisions.
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