There was a lot of head scratching, researching of the Eclipse debugging tools and general background reading in search of a solution. No matter what I did, nothing showed up on the screen when the game was executed.
I finally found the problem. In my code I referred to a subdirectory called "textures" and on disk that folder was named "Textures". The hardest to find problems are often the simplest ones. On a positive note I'm now a lot more comfortable with debugging using Eclipse.