I need it so I can apply a patch to fwbuilder. fwbuilder now uses a provided antlr but I have a patch ready to make use of an external one, just need the package marked testing.
No can do, atm dev-java/antlr RDEPENDS hard on virtual/jdk and we lack that.
Maybe talk to the java herd about it?
Java in alpha was masked and removed long time ago. We have nothing to do here, sorry.