Comment 3 for bug 424322

Eclipse 3.4 only ran on the Ubuntu OpenJDK 6 package -- the Sun JVM would crash after seconds of use, and gij was completely unusable for some reason that slips my mind. It's entirely possible that 3.5.x works with the Ubuntu Sun JVM package in Karmic, but you should test it first before assuming that it does and marking accordingly in debian/control.

Regardless, since the original report was against 3.4, which did require the openjdk 6 package to be used usefully, it wasn't a bug to depend on it explicitly.