Java validation @min @max annotion for null values

user_4521196 0
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I have put validation for the following field, 

@Min(1)
@Max(500)
private int length;

however, the length isn't a required field but when I didn't give the "length" in the input, I got this error:

   "Validation error, message = must be greater than or equal to 1, path = length"

Looking at the @min and @max documentation, it says "null element is considered valid". I know that. If @min @max is only for primitive type, then why the documentation mentions "null" element is considered valid? Can someone let me know how to fix the validation problem? Many thanks.

max min validation java
1 Answers

For optional integer values, you may use Integer instead of int, since an int variable cannot be null and will have 0 as a default value. With an Integer, length will be null by default and you should be able to pass the validation.

user_86916950
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