This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
If you install tomcat using the executable download you should be presented with the option to install as a service. It that worked properly, you should be able to see "Apache-tomcat" (or something close to that) listed in the Services dialog. Just change the startup for that service to "automatic" and it should work. Bill