When gcj is invoked on a Jar archive without a
--main= argument, it would make sense to try to get
the main class from the archive's manifest's Main-Class
If this info is here, it is most probably right.
This would save typing and errors with mispelling the class
I can confirm that gcc 3.3 branch and mainline still don't DTRT. Rather a pity...
See Dara's comment, this would be a very nice thing to have.
Closing as won't fix as the Java front-end has been removed from the trunk.