IWAB0014E Unexpected exception occurred.
  
      java.lang.NullPointerException
      at org.jboss.tools.ws.creation.core.commands.ImplementationClassCreationCommand.execute(ImplementationClassCreationCommand.java:120)
      at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.runCommand(CommandFragmentEngine.java:419)
      at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.visitTop(CommandFragmentEngine.java:359)
      at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.moveForwardToNextStop(CommandFragmentEngine.java:254)
      at org.eclipse.wst.command.internal.env.ui.widgets.SimpleCommandEngineManager$6.run(SimpleCommandEngineManager.java:294)
      at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:437)
      at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:353)
      at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:993)
      at org.eclipse.wst.command.internal.env.ui.widgets.SimpleCommandEngineManager.runForwardToNextStop(SimpleCommandEngineManager.java:264)
      at org.eclipse.wst.command.internal.env.ui.widgets.WizardPageManager.runForwardToNextStop(WizardPageManager.java:91)
      at org.eclipse.wst.command.internal.env.ui.widgets.WizardPageManager.getNextPage(WizardPageManager.java:154)
      at org.eclipse.wst.command.internal.env.ui.widgets.SimpleWizardPage.getNextPage(SimpleWizardPage.java:136)
      at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:869)
      at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:419)
      at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:618)
      at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249)
      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
      at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5208)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
      at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4542)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4132)
      at org.eclipse.jface.window.Window.runEventLoop(Window.java:818)
      at org.eclipse.jface.window.Window.open(Window.java:794)
      at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:269)
      at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:290)
      at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295)
      at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
      at sun.reflect.GeneratedMethodAccessor131.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:54)
      at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:282)
      at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:264)
      at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
      at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
      at org.eclipse.core.commands.Command.executeWithChecks(Command.java:494)
      at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:488)
      at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
      at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:353)
      at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:155)
      at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565)
      at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397)
      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
      at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5208)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
      at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4542)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4132)
      at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1119)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
      at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1020)
      at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
      at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:687)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
      at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:604)
      at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1492)