Hibernate Validator. How to work with @Valid annotation?

Question

What purpose of @Valid annotation when putting it on method parameter level?

public void (@Valid Person p) { ... }

I created a te

Answer 1

Its purpose is to validate the object against the defined constraints.

From Hibernate Docs

Performs validation recursively on the associated object. If the object is a collection or an array, the elements are validated recursively. If the object is a map, the value elements are validated recursively.

This might help http://www.mkyong.com/spring-mvc/spring-3-mvc-and-jsr303-valid-example/