It may be tempting to use the rc.local, but that's the quick and dirty
way and not good for the long-term sustainability and management of a
system. There's no way to individually control any service running
from there, and no way to stop it on shutdown.

Yeah, thank you. I talked with the person who wrote the Java program, and he essentially said the same thing.

I'm looking through his suggestions now, and he suggested a shutdown script. I others who have examples with pid.txt and "dirname $0". Not sure what these are and am googling them now.