At one point I was doing a fair bit of Java Swing development and decided I wanted to create a system to schedule resources. A resource could be anything and the idea (I think) was that you could view in one page all the resources you needed and figure out when they were all free.
Looking at the notes and documents it looks like I was still learning Maven at the time. I believe I abandonded this project because I switched jobs and wasn't using Java Swing as much and I became interested in Java Fx.