title: What setup do I need to do to use JSR-303 annotations with Spring?
body: <p>I downloaded spring 3 and put it on my classpath but I'm not able to import the @Valid annotation. However, I am able to import other spring 3 annotations (such as @Controller). What Jar is @Valid in and what package?</p>
  
  <p>EDIT: This is a JSR-303 annotation. What does that mean and how do I get it?</p>