JMX Documentation?

[Garth Patil]

Hi,
I'm upgrading to 3.0 from a previous version, and I just noticed the
JMX MBean code in the tree. Is there documentation for what is exposed
and some examples of how to use the MBeans? I couldn't find anything
on the site or in the mailing list archive. Also, has anyone used them
with something other than the platform MBean server (e.g. JBoss)?
Cheers,
Garth