As of JRuby 1.1.4, the Java extension for RCov is complete, and all the
tests pass, and it works faster than before (thanks to Charles, Thomas,
all the JRuby core team). We have fixed the last couple of bugs, and
all integrated into RCov (so it’s not a separate install). It is
located at github as hooligan495-rcov. I am working on getting it
into the spicycode fork over at git hub (apparently they’ve been fixing
on RCov as the rubyforge project has been quiet for a while). So I’ll
update you more as that rolls out. But for now add github to your gem
sources (gem sources -a http://gems.github.com) and do a “sudo gem
It should automatically pull down the jruby one if you are using jruby.
Please let me know if you have any issues.