sudheshna palukuru

For time being i found one solution for this problem.

1.I just exit the current workspace.
2.Switch to temp workspace for example E:/temp
3.created a sample portlet factory project.
4.Then switch back to my working workspace and open the model file.then it doesnt show the exception and will open fine.

I dont know the reason for this but this solution may save your time when needed. Thanks

Hi,
Actually i am using Eclipse3.1. I am in "WebspherePortletFactoy" perspective. I am trying to open portlet factory project eg: "registerlearner.model". I am getting the exception like:

java.lang.ClassNotFoundException: com.bowstreet.designer.eclipse.editors.ModelEditor
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java(Compiled Code))
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java(Compiled Code))
at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass(AbstractClassLoader.java(Compiled Code))
at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:275)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1248)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:152)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:240)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:236)
at org.eclipse.ui.internal.registry.EditorDescriptor.createEditor(EditorDescriptor.java:252)
at org.eclipse.ui.internal.EditorManager.createPart(EditorManager.java:842)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:562)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:384)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:223)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2362)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2295)
at org.eclipse.ui.internal.WorkbenchPage.access$9(WorkbenchPage.java:2287)
at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2273)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2268)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2249)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:371)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:334)
at org.eclipse.ui.internal.ide.actions.OpenWorkspaceFileAction.run(OpenWorkspaceFileAction.java:104)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:246)
at org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:223)
at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:117)
at org.eclipse.core.commands.Command.execute(Command.java:311)
at org.eclipse.core.commands.ParameterizedCommand.execute(ParameterizedCommand.java:396)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:459)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:781)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:828)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:550)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:493)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:117)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java(Compiled Code))
at org.eclipse.swt.widgets.Display.filterEvent(Display.java(Inlined Compiled Code))
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java(Inlined Compiled Code))
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java(Compiled Code))
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java(Compiled Code))
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:880)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:876)
at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1190)
at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3135)
at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code))
at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code))
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java(Inlined Compiled Code))
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java(Compiled Code))
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java(Compiled Code))
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)



Can you please tell me the reason why i am getting like this.