Here is a document with detailed instructions to apply MaintainJ on a Tomcat application. The steps in this document should work for other application servers as well.
This document is produced by Chris Velado at Periscope Holdings Inc. Thanks a lot, Chris!
Chris is using MaintainJ on a J2EE application that contains around 4000 classes. The application is based on Struts and uses SQL Server, Oracle 10 and 11g databases.