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when i open apache-jmeter-3.1 and right click the test-plan button,it turns out to be no response and throws lists of errors in the jmeter.log as follows

2016/12/17 16:24:30 ERROR - jmeter.JMeter: Uncaught exception:  java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.MenuFactory
at org.apache.jmeter.control.gui.TestPlanGui.createPopupMenu(TestPlanGui.java:93)
at org.apache.jmeter.gui.tree.JMeterTreeNode.createPopupMenu(JMeterTreeNode.java:156)
at org.apache.jmeter.gui.tree.JMeterTreeListener.displayPopUp(JMeterTreeListener.java:248)
at org.apache.jmeter.gui.tree.JMeterTreeListener.mousePressed(JMeterTreeListener.java:193)
at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

what happened and how can i fix it? thanks !!! it has bothered me a long time...

User.Super
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3 Answers3

126

I've got a similar issue. The solution was changing the theme!

Try the following:

  1. Open JMeter -> Options -> Look and Feel -> Select any other theme other than Darcula (E.g. System theme).
  2. Restart JMeter.

source: https://www.javaer101.com/en/article/5555703.html

Mohsenasm
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4

Normally this happens when a Dependent jar is not present or in case if there is a conflicting jar with different implementation present.

Check this post https://newspaint.wordpress.com/2013/08/21/jmeter-could-not-initialize-menufactory-class/

Kaushik Patel
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  • thank you very much. according to your anwser, i recognized there may have a confilcting jar. i tried to delete jars in /lib/ext one by one and finnaly found the ApacheJMeter_mail.jar effected the jmeter GUI launch. – User.Super Dec 18 '16 at 07:11
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I was not able to open any file. Ctrl + O was showing same error. Problem is solve by changing theme.

Shekhar Tyagi
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  • As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-ask). – Community Sep 19 '21 at 09:07
  • This does not really answer the question. If you have a different question, you can ask it by clicking [Ask Question](https://stackoverflow.com/questions/ask). To get notified when this question gets new answers, you can [follow this question](https://meta.stackexchange.com/q/345661). Once you have enough [reputation](https://stackoverflow.com/help/whats-reputation), you can also [add a bounty](https://stackoverflow.com/help/privileges/set-bounties) to draw more attention to this question. - [From Review](/review/late-answers/29863902) – Sweta Jain Sep 19 '21 at 10:23
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    This is the same solution as in [this other answer](https://stackoverflow.com/a/67138024/2227743). *When answering older questions that already have answers, please make sure you provide either a novel solution or a significantly better explanation than existing answers.* – Eric Aya Sep 19 '21 at 10:59