@Documented @Constraint(validatedBy={}) @Target(value={METHOD,FIELD,ANNOTATION_TYPE,CONSTRUCTOR,PARAMETER,TYPE_USE}) @Retention(value=RUNTIME) @Repeatable(value=NotBlank.List.class) public @interface NotBlank
null
and must contain at least one non-whitespace character. Accepts
CharSequence
.Character.isWhitespace(char)
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