Simple way to write to SQL file from Java

I am creating an application to write to a .db SQL file that will be sent to a client and read from.I have seen many tutorials on SQL databases but what I needed was more in the realm of embedded databases so I found several libraries for that which all seamed to still need some kind of extra stuff (IMO). Ideally I would like to be able to make a few function calls to open the .db file and write to it, I've already implemented the rest. Every SQL tutorial I have seen has required some sort of server or Device Driver and it seams all to complicated to write / read from a file.