I always wanted to try adding Internationalization to an application I worked on. See: - [Internationalization Trail](https://docs.oracle.com/javase/tutorial/i18n/) - [Our resources manager and how it helped in localizing Clash of the Olympians](http://blog.gemserk.com/2013/05/01/our-resources-manager-and-how-it-helped-in-localizing-clash-of-the-olympians/)