This feature is new in the Solaris Express 8/04 release.
In addition to using the monitoring protocols, administrators and developers can use new command-based diagnostic tools. Tools are available for the following tasks:
Performance analysis – jstat
Fatal error handling – XX:OnError
Core file analysis – jdi connectors
JVM internals tools – jstack, jmap, jinfo
In addition, Java extensions are available for the DTrace tracing facility.