Tl; dr: Tic-Tac-Toe.zip
All right, finished one of the projects I've been working on, and it turned out pretty decent.
Took a while to work out the last few weird errors I was having, but that's normally how these things go.
The .zip above comes with the source, .jar, and a read-me on how to set it all up.
Also let me know what you think about the new site design. (Mobile is different too!)
P.S. - Questions/comments/concerns can be posted here on the blog, or you can mail me at 'firstname.lastname@example.org'.