[antlr-interest] Tweaking Java target

[Sam Barnett-Cormack]

Hey all,

Say I wanted to tweak the Java target - say, create a new DoccedJava
target that's identical apart from doing some generated doc-comments in
the output. I know that it'd break with new versions and so on, but I'm
happy to maintain it privately for my own use. I'm not saying add it to
the product.

What files need editing? Where are they? Do I need to unroll the jar and
reroll it, or can I have "local" target templates in my project build path?

Thanks very much for any help,

Sam