Search code examples
javajvmclasspathjmxjconsole

How do I add a jar to jconsole classpath in windows?

I'm trying to invoke a JMX MBean via Jconsole, but the method that I'm calling receive an object that needs to be on jconsole classpath in order to work.

I've tried this and the jconsole does not open (and no error is shown):

jconsole -J-Djava.class.path=%JAVA_HOME%\lib\jconsole.jar;path_to_newjar_\newjar.jar
Solution

  • Take jconsole.jar out of the -J classpath. It's already set in the jconsole launcher.

    ===== Update =====

    Hmmm.... I take back my suggestion. I have a windows batch file I use [which works] which adds a JAR to the classpath. The intent is to add the JMXMP JMX client into jconsole and then launch to the argument specified JMX Service URL. It looks like this:

    @echo off
start /B jconsole -J-Djava.class.path=%JAVA_HOME%\lib\jconsole.jar;MY-JAR-PATH\jmx-optional-1.0-b02-SNAPSHOT.jar service:jmx:jmxmp://localhost:%1

    If a command like that does not work (i.e. jconsole still will not launch, but does not error out either), then you need to figure out where it is stalling. 2 suggestions for this:

    1. Launch another jconsole and attach to the stalled jconsole by PID, switch to the Threads tab and eyeball what's going on in the main thread.
    2. Or, (since it looks like you're in windows) hit Ctrl-Break and hopefully it will print out a thread dump to the console and you can then eyeball the main thread going-ons there.

    Post back if you get anything (or if you don't....)