Tile viewer

Now that I have the beginnings of a renderer, it needs a GUI. Well, that's what I told myself. Since the the path to a renderer has really been a journey towards understanding Java, I need to explore more of Java and its classes. One of the options Java gives is a graphical user interface - Swing. I have had a fiddle with Swing using NetBeans and I'm pleasantly surprised how easy it has been.  I am very familiar with GUI programming in other languages and it seems that Java follows a similar route.  I now have a rudimentary viewer for a tile, though rendering that tile nicely is still a long way off.