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RE: [pde-dev] Plug-in was unable to loadclass jcv.action.DefinePqmMenuAction.

Hi Brian,

 

Thanks a lot for your quick response.

 

The referred class is from the source folder. In my eclipse project, the file is under the package hierarchy <<project-name>> / src / jcv / action.

 

Inside the plug-in jar the corresponding java file “DefinePqmMenuAction” is packaged under “jcv\action”

 

The jar tree is –

JavaCodeValidator_1.0.0.jar

            jcv

                        action

                        activator ….

            lib

                        << all external jars >>

            meta-inf

                        manifest.mf

            plugin.xml

 

The build properties file is below-

source.. = src/

output.. = bin/

bin.includes = plugin.xml,\

               META-INF/,\

               .,\

               icons/,\

               html/,\

               *.xml,\

               lib/ant-23.jar,\

               lib/commons-beanutils.jar,\

               lib/commons-collections.jar,\

               lib/commons-lang.jar,\

               lib/commons-logging.jar,\

               lib/commons-validator.jar,\

               lib/xercesImpl.jar

 

Please guide me accordingly.

 

Thanks & Regards,

Sriram

 


From: pde-dev-bounces@xxxxxxxxxxx [mailto:pde-dev-bounces@xxxxxxxxxxx] On Behalf Of Brian Bauman
Sent: Monday, November 05, 2007 8:56 PM
To: Eclipse PDE general developers list.
Cc: 'pde-dev@xxxxxxxxxxx'; pde-dev-bounces@xxxxxxxxxxx
Subject: Re: [pde-dev] Plug-in was unable to loadclass jcv.action.DefinePqmMenuAction.

 


Hi Sriram,

Welcome to PDE :)  You are right, this is a common problem so lets see what we can do to help.

I take it this class is in a source folder in your project.  If not, where is this class suppose to be coming from (which jar)?  If so, could you send your build.properties file.  One of the most common errors, especially when it does not run after export, is that the bundle is not be assembled properly.  The build.properties is responsible for this and therefore is a good place to start if your class is suppose to come from a source folder.

Brian Bauman
    IBM Software Group - Austin, TX
    Eclipse Committer
    baumanbr@xxxxxxxxxx
    (512) 838 -2938 (T/L 678-2938)


From:

Sriram Hariharasubramanian <Sriram_H@xxxxxxxxxxx>

To:

"'pde-dev@xxxxxxxxxxx'" <pde-dev@xxxxxxxxxxx>

Date:

11/05/2007 09:14 AM

Subject:

[pde-dev] Plug-in was unable to load class        jcv.action.DefinePqmMenuAction.

 





Hi All,
 
I am new to eclipse plug-in development. I have created a plug-in and tested the same using the “Launch an Eclipse application”. It is working fine in this case.
 
I then created a plug-in jar using the “Export-Wizard” and placed the jar into the plug-in directory. However when I launch eclipse and try to access the preferences page; I get the error as “Could not create action delegate for id: jcv.action.DefinePqmMenuAction”. This is due to a ClassNotFoundException.
 
I guess this problem has been encountered before. I am currently stuck up with this issue and am unable to proceed. Kindly guide me.
 
Provided below is the log details-
 
eclipse.buildId=M20060628-1325
java.version=1.4.2_03
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments:  -os win32 -ws win32 -arch x86
 
Error
Mon Nov 05 20:16:14 GMT+05:30 2007
Plug-in JavaCodeValidator was unable to load class jcv.action.DefinePqmMenuAction.
 
java.lang.ClassNotFoundException: jcv.action.DefinePqmMenuAction
                at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:407)
                at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:352)
                at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:276)
                at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)
                at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245)
                at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:147)
                at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:759)
                at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
                at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)
                at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:242)
                at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
                at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:238)
                at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:120)
                at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:225)
                at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:229)
                at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:539)
                at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)
                at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)
                at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
                at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
                at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
                at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
                at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
                at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
                at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
                at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
                at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
                at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
                at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
                at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
                at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
                at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
                at java.lang.reflect.Method.invoke(Unknown Source)
                at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
                at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
                at org.eclipse.core.launcher.Main.run(Main.java:977)
                at org.eclipse.core.launcher.Main.main(Main.java:952)
 
The manifest file is –
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: JavaCodeValidator
Bundle-SymbolicName: JavaCodeValidator; singleton:=true
Bundle-Version: 1.0.0
Bundle-Activator: jcv.activator.JcvActivator
Bundle-Localization: plugin
Require-Bundle: org.eclipse.ui,
 org.eclipse.core.runtime,
 org.eclipse.core.resources,
 org.eclipse.jdt.core,
 org.eclipse.jface.text,
 org.eclipse.ui.workbench.texteditor,
 org.eclipse.ui.ide,
 org.eclipse.core.filebuffers,
 org.eclipse.jdt.ui,
 org.eclipse.ltk.core.refactoring,
 org.eclipse.ltk.ui.refactoring
Eclipse-LazyStart: false
Bundle-ClassPath: lib/ant-23.jar,
 lib/commons-beanutils.jar,
 lib/commons-collections.jar,
 lib/commons-lang.jar,
 lib/commons-logging.jar,
 lib/commons-validator.jar,
 lib/xercesImpl.jar
 
The plugin.xml file –
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.2"?>
<plugin>
   <extension
         point="org.eclipse.ui.actionSets">
      <actionSet
            label="Java Code Validator"
            visible="true"
            id="JavaCodeValidatorActionSet">
         <menu
               label="Java &amp;Code Validator"
               id="JavaCodeValidatorMenu">
            <separator
                  name="JavaCodeValidatorMenuGroup">
            </separator>
         </menu>
         <action
               label="Validate Java Code"
               icon="icons/jcv.GIF"
               class="jcv.action.JcvMenuAction"
               tooltip="Validate Java Code "
               menubarPath="JavaCodeValidatorMenu/JavaCodeValidatorMenuGroup"
               toolbarPath="JavaCodeValidatorMenuGroup"
               id="jcv.action.JcvMenuAction">
         </action>
         <action
               label="Define Preferences"
               class="jcv.action.DefinePreferencesMenuAction"
               tooltip="Define Preferences"
               menubarPath="JavaCodeValidatorMenu/JavaCodeValidatorMenuGroup"
               id="jcv.action.DefinePreferencesMenuAction">
         </action>
         <action
               label="Define PQM Parameters"
               class="jcv.action.DefinePqmMenuAction"
               tooltip="Define PQM Parameters"
               menubarPath="JavaCodeValidatorMenu/JavaCodeValidatorMenuGroup"
               id="jcv.action.DefinePqmMenuAction">
         </action>
      </actionSet>
   </extension>
   
                <extension point="org.eclipse.ui.preferencePages">
                                <page id="JavaCodeValidatorPage"
                                                name="Java Code Validator"
                                                class="jcv.preference.JcvPreferencePage">
                                </page>
                               
                                <page id="JcvJavaDocSettings"
                                                name="Java Doc Settings"
                                                class="jcv.preference.JcvPreferencePage"
                                                category="JavaCodeValidatorPage">
                                </page>
                </extension>
               
</plugin>
 
Any suggestion very appreciated... Thanking you in advance!!!
 
Thanks & Regards,
Sriram
 
 

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