Something about Nothing

I need to obfuscate a large Struts based application. We have about 300+ Actions, with some logic written in Action files and some distributed in DAO and Business Methods. I strongly need to Obfuscate it as this is our flagship product and we are on the edge of deployment. Application code has beed written by a number of people so there is no guarantee in the coding standars being consistent.

I am aware of quite a tools that have been mentioned on various Java forums, i am looking for guide or help on how to do this. Any reader with a similar experience will surely give a better idea