Beginning in the 5.0.0 release, the Content Java API Compatibility Layer is deprecated and support will be removed in a future release.
If you have already modified your 3.5.x Content Java API application to run in a 4.x environment, there are no additional modifications needed to run your application in the current release environment. If you are upgrading your application from a release prior to 4.5.1, then refer to the Content Java API upgrade information in the V4.5.1 documentation for additional information.