I installed j-meter and tried to get a test report then i got the following error and couldn't save the file ...after selecting options < look&feel and changing the theme it worked!!!! i want to know what is the reason behind this ? can any one explain?
ERROR o.a.j.JMeter: Uncaught exception in thread Thread[AWT-EventQueue-0,6,main] java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger at org.apache.jmeter.gui.action.Save.computeFileName(Save.java:201) ~[ApacheJMeter_core.jar:5.4.1] at org.apache.jmeter.gui.action.Save.doAction(Save.java:163) ~[ApacheJMeter_core.jar:5.4.1] at org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:87) ~[ApacheJMeter_core.jar:5.4.1] at org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$0(ActionRouter.java:69) ~[ApacheJMeter_core.jar:5.4.1] at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:316) ~[?:?] at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770) ~[?:?] at java.awt.EventQueue$4.run(EventQueue.java:721) ~[?:?] at java.awt.EventQueue$4.run(EventQueue.java:715) ~[?:?] at java.security.AccessController.doPrivileged(AccessController.java:391) ~[?:?] at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?] at java.awt.EventQueue.dispatchEvent(EventQueue.java:740) ~[?:?] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?] at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?] at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?] at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]