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All Stories published by lucky-sonnie on September 14, 2020
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sonnie
in
lucky-sonnie
Sep 14, 2020
@NotNull, @NotEmpty, @NotBlank 의 차이점
@NotNull
null 만 안됨, 비어있는 값은 괜찮음
@NotEmpty
null 안됨. 해당 필드(ex. Collection, Map, array)의 size, length가 최소 0보다 커야한다.
@NotBlank
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September 11, 2020
September 21, 2020
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