I create web service using Eclipse,
Tomcat.
This error was occured during development.
Please suggest me idea to resolve this.
IWAB0014E Unexpected exception occured.
org/eclipse/wst/common/frameworks/internal/FlexibleJavaProjectPreferenceUtil
java.lang.NoClassDefFoundError: org/eclipse/wst/common/frameworks/internal/FlexibleJavaProjectPreferenceUtil
at org.eclipse.jst.ws.internal.common.ResourceUtils.getClientProjectComponentName(ResourceUtils.java:1764)
at org.eclipse.jst.ws.internal.consumption.ui.widgets.runtime.ClientRuntimeSelectionWidgetDefaultingCommand.updateClientProject(ClientRuntimeSelectionWidgetDefaultingCommand.java:962)
at org.eclipse.jst.ws.internal.creation.ui.widgets.runtime.ServerRuntimeSelectionWidgetDefaultingCommand.setDefaultProjects(ServerRuntimeSelectionWidgetDefaultingCommand.java:371)
at org.eclipse.jst.ws.internal.creation.ui.widgets.runtime.ServerRuntimeSelectionWidgetDefaultingCommand.execute(ServerRuntimeSelectionWidgetDefaultingCommand.java:91)
at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.runCommand(CommandFragmentEngine.java:335)
at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.visitTop(CommandFragmentEngine.java:301)
at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.moveForwardToNextStop(CommandFragmentEngine.java:217)
at org.eclipse.wst.command.internal.env.ui.widgets.SimpleCommandEngineManager$4.run(SimpleCommandEngineManager.java:208)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:346)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:830)
at org.eclipse.wst.command.internal.env.ui.widgets.SimpleCommandEngineManager.runForwardToNextStop(SimpleCommandEngineManager.java:177)
at org.eclipse.wst.command.internal.env.ui.widgets.WizardPageManager.runForwardToNextStop(WizardPageManager.java:80)
at org.eclipse.wst.command.internal.env.ui.widgets.WizardPageManager.getNextPage(WizardPageManager.java:119)
at org.eclipse.wst.command.internal.env.ui.widgets.SimpleWizardPage.getNextPage(SimpleWizardPage.java:120)
at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:747)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:345)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:556)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:809)
at org.eclipse.jface.window.Window.open(Window.java:787)
at org.eclipse.ui.actions.NewWizardAction.run(NewWizardAction.java:181)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:996)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)
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:843)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
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(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: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)
