Project Reactor · interview question
If a Mono completes empty, which of the following methods can be used to provide a default value?
Multiple choiceHardchapter-19-curatedpremiumproject-reactorproject-reactor-mono
Answer and explanation
Correct answer
A. Mono.defaultIfEmpty(T defaultValue)
Why
Mono.defaultIfEmpty(T defaultValue) is used to provide a default value when the Mono completes without emitting any item. This ensures that a non-empty result is always obtained from the Mono.
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