The util package contains only 2 files: an implementation of javax.servlet.ServletContextListener that initializes the logging facilities for the web app, and a class of constants.

If you downloaded the source, you may have noticed some extra packages in the source tree. For the most part, that's what the sample webapp is using for a back end. Since this article is only about Struts, I'm not going to discuss persistence mechanisms here, but the ones used by the sample are far from enterprise-ready. Look for future articles on integrating Struts with other frameworks to provide additional functionality, including truly enterprise-ready persistence through the Hibernate ORM framework.