Hi, I don't want to discourage you from getting more involved with Debian and Java packaging in general but in my opinion you shouldn't start with packaging your own application. wallpaperdownloader sounds like a nice little application but it is probably just that. Debian is not a general-purpose store for private projects. An application should have a considerable user base already or the application should satisfy a real demand. Downloading images from the Internet...I think a list of URLs and a web browser will most certainly do.
Regards, Markus
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