Java Annotations · interview question
Why do teams use RetentionPolicy.RUNTIME in annotations in production code?
Multiple choiceEasychapter-16-curatedpremiumjava-annotationsretention-policies
Answer and explanation
Correct answer
B. To ensure annotations are accessible during runtime via reflection.
Why
RetentionPolicy.RUNTIME allows annotations to be retained at runtime, making them accessible through reflection. This is crucial for frameworks like Spring Boot, where annotations configure behavior dynamically.
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