...now that Android Studio (
https://developer.android.com/sdk/index.html) is the new "official" IDE and the Eclipse-Plugin won't be developed any further, i tried to setup my RPG development environment in Android Studio. Here's the short version:

The long version is, that Android Studio is made for Android. It's not really made for developing and running desktop Java applications (and that includes, as sad as it is, libraries that are simple Java libraries and not for Android only). You can create and run Java applications, but it has it's limits. Android Studio forces you to use Gradle and adds an Android plugin to it, which doesn't seem to play well when mixed with normal Java apps.
I managed to setup everything in about 8h of trial and error except that i wasn't able to run the desktop version of the RPG. It compiled fine but when trying to run it, Gradle was suddenly unable to find the required libraries. 8h are enough...so i gave up on it and will continue to use Eclipse for the time being. Apart from that, it eats memory like crazy, is much slower than Eclipse and has various funny UI bugs.
I actually hate it...i think...