This is simple 2 Player Tic-Tac-Toe or Tic-Tack-Toe game which basically demonstrates 3 things:
1: TPI concept- True Platform Independence, that means this game will run anywhere where JRE is installed. Like Linux Flavors, MacOS or Windows platform.
2: Nimbus UI- This is new age platform independent UI to keep the visual design of a software based on Swing as it is between the various Platforms.