Running Visual VM from eclipse

java eclipse profiler visualvm
Anushree Acharjee picture Anushree Acharjee · Sep 12, 2014 · Viewed 13.8k times · Source

I am trying to debug a java app using Visual VM in Eclipse kepler. I am executing the class having main method selecting Visual VM as launcher. I have configured Visual VM as per the instructions given in http://blog.idrsolutions.com/2013/05/setting-up-visualvm-in-under-5-minutes. I am getting the following error:

An internal error occurred during: “Launching TestNew”.
java.lang.NullPointerException

“TestNew” is the name of the class with main method I am trying to execute.

please help.

Answer

Markus A. picture Markus A. · Oct 6, 2014

I had the same issue... Let me expand a bit on Anushree's comment:

  • Go to Window ⇒ Preferences ⇒ Run/Debug ⇒ Launching ⇒ VisualVM Configuration
  • Browse... for the VisualVM Executable in your JDK's bin-directory
  • Make sure to also set the JDK's root directory under JDK Home. If you leave that pointing to your JRE directory, you'll run into the next error...

Happy profiling...

BTW: If you then have issues getting your application to show up inside jVisualVM, take a look here: Getting Java program running in Eclipse to show up in VisualVM

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