Also, the tutorial should include "jarwrapper" in the example "debian/control" so that copy&paste just works. The section about "jarwrapper" in the tutorial gives further explanation in case anyone is interested.
Maybe a hint about overwriting targets in "debian/rules" should be
given as well:
override_jh_build:
jh_build --main ClassName
Probably it would be best to add a new section to the tutorial
summarizing all these findings!
