Not the same thing at all. I have numerous images within my game, not to mention the HUD related ones I use. To minimize the overall size of the game jar I will need to strip non essential files. I can either search through the code and manually copy paste or have the class responsible tell me whats in its cache.
As Xith improves, functionality I already had is appearing in the core project. So I remove mine versions and use the core versions, the texture caching for example. I did not think it was publicly accessible so either access to the cache is added, to dump contents, or dump contents is added to the class.
I would think you could also use asset management tools in your game, it looks resource intense.
Absolutely

I was just joking about the unix commands thingies...
So, does a resource watcher fits the bill ? I mean, a small program which shows a list of every texture ? (maybe even we can do preview thumbs

ahah, sweet!) I can even tell you from where it has loaded (which Source file, which line). Then we can do an Eclipse plug-in which opens the declaration in the Editor.
What about that, man ?