Uncompress the zip file and
follow the instructions on quick start guide

This bundle contains the OpenXava code, the code for all demos, a Tomcat server, a preconfigured Eclipse workspace, etc.

If you want to update your OpenXava application replace the OpenXava project in your workspace by the one in this distribution. Afterwards, execute the updateOX ant target of your project.

More OpenXava downloads in SourceForge download page