What IDE's are people using to develop POI? Command line Ant and Gradle on Linux are pretty straight forward. We currently ship POI with an Eclipse .project file, but I'd be interested in adding project files for other IDEs if it makes it easier for people to build POI for the first time.
I am trying out IntelliJ IDEA. If someone already has a working setup in IDEA that is reusable on a fresh checkout, let us know.