While the install places a separate Java runtime and development kit on the system along with others you may have, as a result if you were to copy the installed JDK file to another version of OS X ...

Hello,This is driving me crazy.I have Domino 7 installed on a RHEL 4 system. I'm trying to install TrippLite's Poweralert software on this thing and the installer gives the No JRE Environment ...

This post explains how to install Java or check which version is running on your machine. Install on any OS, and learn about the JDK.