Using bean validation

Java Bean Validation—JSR-303 is a framework that has been approved by the JCP (Java Community Process) and is accepted as a part of the Java EE 6 specification. Through this framework, we can easily add validation on the attributes in the bean. In this recipe, we will create a form for the Product bean and we will validate the attributes.

Getting ready

Before we start with bean validation, we need to download a Bean Validation implementation and add it to our project. For example, one of them is available at the following URL:

http://code.google.com/p/agimatec-validation/downloads/list

Alternatively, we can download the Hibernate Validator from the following URL:

http://www.hibernate.org/subprojects/validator/download

Or add the Maven dependency:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>4.3.1.Final</version>
</dependency>

Hibernate Validator requires slf4j...