Validating the value
Constraints on static fields are not supported, though.If your model class adheres to the Java Beans standard, it is also possible to annotate the properties of a bean class instead of its fields.
If the object is a collection or an array, the elements are validated recursively.The version (30.0) of the browser you are using is outdated and not supported.You should consider upgrading to a more up-to-date browser.Hibernate Validator comprises a basic set of commonly used constraints.These are foremost the constraints defined by the Bean Validation specification (see Table 2.2, “Bean Validation constraints”).
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With one exception also these constraints apply to the field/property level, only Checks that the annotated character sequence is not null and the trimmed length is greater than 0.