Networking · interview question
When using Jackson, how can you ensure a field is only serialized if it has a non-null value?
Multiple choiceHardchapter-11-curatedpremiumnetworkingjackson-objectmapper
Answer and explanation
Correct answer
C. Use @JsonInclude(Include.NON_NULL).
Why
The @JsonInclude(Include.NON_NULL) annotation is used to ensure that fields are only serialized if they have a non-null value. This helps reduce JSON payload size by excluding unnecessary null fields.
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