Spring Core · interview question
In Spring Boot, which annotation would you use to ensure that a method parameter is not null?
Multiple choiceEasychapter-9-curatedpremiumspring-corepersistence-and-validation
Answer and explanation
Correct answer
D. @NotNull
Why
@NotNull is used to ensure that a variable is not null. This is useful for method parameters where you want to ensure that a null value isn't passed, preventing NullPointerExceptions.
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