Hi,

if i choose the Menue-Items "detect unnecessary code" i get the
error-message "The choosen operation is currently not available".

what is wrong?

You will find some information at the bottom.

best regards

Klaus Welsing

In the error-log i see those exceptions:

ENTRY org.eclipse.ui 4 4 2009-09-15 15:07:46.774

!MESSAGE Could not create action delegate for id: org.ucdetector.SearchAction

!ENTRY org.eclipse.equinox.registry 4 1 2009-09-15 15:07:46.774

!MESSAGE Plug-in org.ucdetector was unable to load class
org.ucdetector.action.UCDetectorAction.

!STACK 0

java.lang.ClassNotFoundException: org.ucdetector.action.UCDetectorAction

at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(Bun
dleLoader.java:481)

at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoade
r.java:397)

at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoade
r.java:385)

at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultC
lassLoader.java:87)

at java.lang.ClassLoader.loadClass(Unknown Source)

at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoade
r.java:313)

at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.ja
va:227)

at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractB
undle.java:1274)

at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutab
leExtension(RegistryStrategyOSGI.java:160)

at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtens
ion(ExtensionRegistry.java:867)

at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExt
ension(ConfigurationElement.java:243)

at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecuta
bleExtension(ConfigurationElementHandle.java:51)

at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:267)

at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)

at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.jav
a:263)

at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:122)

at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:223)

at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(Actio
nContributionItem.java:583)

at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContribution
Item.java:500)

at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContrib
utionItem.java:411)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)

at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)

at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382)

at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)

at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)

at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)

at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication
.java:113)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java
:193)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication
(EclipseAppLauncher.java:110)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseA
ppLauncher.java:79)

at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)

at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)

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.equinox.launcher.Main.invokeFramework(Main.java:549)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)

at org.eclipse.equinox.launcher.Main.run(Main.java:1236)

some eclipse-Infos:

*** Platform Details:

*** System properties:
awt.toolkit=sun.awt.windows.WToolkit

eclipse.buildId=M20080911-1700

eclipse.commands=-os

win32

-ws
win32

-arch
x86

-showsplash
C:\Programme\eclipse\plugins\org.eclipse.platform_3.3.101.v200809111700\splas
h.bmp

-launcher

That's strange! UCDetector should work with eclipse 3.3.

You must use java >= 1.5

Can you see the UCDetector preference page?

Do you have more then one ucdetector*.jar in the plugins dir?

Maybe the stack trace you added above is not complete.

Try it with eclipse > 3.3

I use java jdk1.6.0_16.

I didn't se the UCDetector UCDetector preference page.

There is only the file org.ucdetector.source_1.2.0.jar in the plugins dir.

In an another environment i have got the same message with eclips 3.5.

I used the install discreption at the homepage of udetector.

thank's for your answer

Klaus Welsing

I have found the defect. ECLIPSE_HOME pointed to the wrong directory.

After correction anything works fine.

thanks 4 all

That's strange: A wrong ECLIPSE_HOME causes plugins not to load.

I god another solution for this problem by a user:

I reinstalled the plugin and it's working fine now.

Another solution may be moving the jar

from:

ECLIPSE_HOME\dropins\org.ucdetector_x.y.z.jar

to:

ECLIPSE_HOME\plugins\org.ucdetector_x.y.z.jar

I got the same problem where the error log shows a ClassNotFoundException.
(using java 1.5, no problem with ECLIPSE_HOME) This also prevented the
UCDetector reference page to load. stacktrace:

java.lang.ClassNotFoundException:
org.ucdetector.preferences.UCDetectorPreferencePageKeywords

at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoade
r.java:489)

at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:405)

at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:393)

at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultC
lassLoader.java:105)

at java.lang.ClassLoader.loadClass(ClassLoader.java:251)

at
org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:321)

at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.ja
va:231)

at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractB
undle.java:1193)

at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutab
leExtension(RegistryStrategyOSGI.java:160)

at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtens
ion(ExtensionRegistry.java:874)

at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExt
ension(ConfigurationElement.java:243)

at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecuta
bleExtension(ConfigurationElementHandle.java:51)

at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:267)

at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)

at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.jav
a:263)

at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceNode.createPage(Workbenc
hPreferenceNode.java:47)

at org.eclipse.jface.preference.PreferenceDialog.createPage(PreferenceDialog.j
ava:1339)

at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.createPage(Filtere
dPreferenceDialog.java:382)

at org.eclipse.jface.preference.PreferenceDialog.showPage(PreferenceDialog.jav
a:1230)

at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.showPage(FilteredP
referenceDialog.java:679)

at org.eclipse.jface.preference.PreferenceDialog$10.run(PreferenceDialog.java:
708)

at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)

at org.eclipse.jface.preference.PreferenceDialog$9.selectionChanged(Preference
Dialog.java:704)

at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:864)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.core.runtime.Platform.run(Platform.java:888)

at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)

at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)

at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(Structu
redViewer.java:862)

at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewe
r.java:1175)

at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewe
r.java:1200)

at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.jav
a:251)

at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:245)

at org.eclipse.jface.util.OpenStrategy$3.run(OpenStrategy.java:419)

at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)

at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)

at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3855)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3476)

at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)

at org.eclipse.jface.window.Window.open(Window.java:801)

at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPre
ferenceDialog.java:211)

at org.eclipse.ui.internal.OpenPreferencesAction.run(OpenPreferencesAction.jav
a:65)

at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)

at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(Actio
nContributionItem.java:584)

at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContribution
Item.java:501)

at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContrib
utionItem.java:411)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)

at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3880)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3473)

at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)

at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)

at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)

at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)

at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication
.java:113)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java
:194)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication
(EclipseAppLauncher.java:110)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseA
ppLauncher.java:79)

at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)

at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
l.java:25)

at java.lang.reflect.Method.invoke(Method.java:585)

at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)

at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

I think this is not a UCDetector problem. It is a update manager (p2) problem.
Try:

• Uninstall UCDetector (or remove ucdetector.jar from plugins dir)
  
• restart eclipse
  
• put ucdetector.jar in dropins directory
  
• restart eclipse
  

Maybe there is more information in WORKSPACE/.metadata/.log

Hi spj,

This did not fix the problem. I tried using the update manager instead of
dropping the jar in either the dropins or plugins, but that resulted in the
plugin to be not visible at all.

The .log file in .metadata shows a classnotfound:

Caused by: java.lang.ClassNotFoundException: org.ucdetector.UCDetectorPlugin

I saw that after using the update site, eclipse created a feature folder for
UCdetector 1.2.0. I tried adding the jar after that by hand, because it was
not present in the plugins folder. I don't know why eclipse would be unable to
fund the classes. If I can provide more information, please ask.

I experimented a little bit and had the same problems,

when ucdetector was installed by "Help/install new software".

After:

• uninstalling ucdetector using "Help/install new software".
  
• Exit eclipse
  
• put ucdetector.jar in dropin directory
  

it worked.

Maybe org.ucdetector_1.2.0.jar is corrupt:

Check, if file size is about 162 KB

Can you unzip org.ucdetector_1.2.0.jar ?

If all this does not work... Sorry I have no more idea...

Maybe try a fresh eclipse-3.5!

Closed discussion because of spam.

When the plugin is not visible at all, start eclipse with the osgi console and
install ucdetector manually:

> cd eclipse
> ./eclipse -console
osgi> install file:./dropins/org.ucdetector_1.8.0.jar
osgi> start org.ucdetector

This should result in an error message.

UCDetector 1.9.0 will work with "Eclipse IDE for Java Developers" (changed
dependency org.eclipse.pde.core to "optional")

Steps to use the UCDetector as below link:

http://www.ucdetector.org/

Nanda Kishore