Java Validation Frameworks

Question

I once came across a validation framework for java, where you wrote one method that protected the integrity of the data-type and any CRUD operations on that data-type automa

Answer 1

Here's a huge list of Java Validation Libraries / Frameworks - http://java-source.net/open-source/validation

Answer 2

Hibernate Validator, per adref's answer, is an implementation of JSR-303. Here's a helpful article to get you started if you are interested:

http://java.dzone.com/articles/bean-validation-and-jsr-303

Answer 3

Are you using Hibernate for persistence? If you are, there is Hibernate Validator.

Answer 4

Apache Commons has a validation framework.

Answer 5

Spring has a very nice validation and binding API.