What is trying to launch 'java' on my Mac OS X Mountain Lion
Also check ~/Library/LaunchAgents, /Library/LaunchAgents, /Library/StartupItems, /System/Library/LaunchAgents, /System/Library/LaunchDaemons, to get a more complete picture of what might be running/starting up on boot and login.

Dunno about you, but my installation came default with some com.apple.java.* plist files.  I am running Mountain Lion.