使用VE的时候，无法建立窗口对象

Question

用向导创建窗口的时候，出现错误：
creation of element failed.
see error log for more details.error log内容如下：
java.lang.reflect.InvocationTargetException
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:284)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:752)
at org.eclipse.jdt.internal.ui.wizards.NewElementWizard.performFinish(NewElementWizard.java:115)
at org.eclipse.ve.internal.java.codegen.wizards.NewVisualClassCreationWizard.performFinish(NewVisualClassCreationWizard.java:411)
at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:609)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:305)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:506)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:668)
at org.eclipse.jface.window.Window.open(Window.java:648)
at org.eclipse.ui.actions.NewWizardAction.run(NewWizardAction.java:163)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:881)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:915)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:866)
at org.eclipse.jface.action.ActionContributionItem$7.handleEvent(ActionContributionItem.java:785)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
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.basicRun(Main.java:183)
at org.eclipse.core.launcher.Main.run(Main.java:644)
at org.eclipse.core.launcher.Main.main(Main.java:628)
Caused by: java.lang.NoClassDefFoundError
at org.eclipse.jdt.core.dom.AST.newTypeDeclaration(AST.java:1483)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:250)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:152)
at org.eclipse.jdt.core.dom.ASTParser.convert(ASTParser.java:711)
at org.eclipse.jdt.core.dom.ASTParser.internalCreateAST(ASTParser.java:681)
at org.eclipse.jdt.core.dom.ASTParser.createAST(ASTParser.java:574)
at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.constructCUContent(NewTypeWizardPage.java:1585)
at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createType(NewTypeWizardPage.java:1445)
at org.eclipse.ve.internal.java.codegen.wizards.NewVisualClassCreationWizard.finishPage(NewVisualClassCreationWizard.java:303)
at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$2.run(NewElementWizard.java:108)
at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:34)
at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:700)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1673)
at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:3246)
at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:65)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:101)很奇怪的是，error log的错误消息：
eclipse.buildId=I200406251208
java.version=1.5.0_11
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN
指明java版本是1.5.0_11，我怀疑问题就出在这里，
但是我用的是：
Eclipse3.0.0
VE 1.0.2.2
GEF 3.0.0
EMF 2.0.0只有tomcat5.5自己用的是1.5版本的，但是Eclipse3里已经把任何1.5的配置都删除了，只有1.4.2的jdk版本。为什么会这样啊，疯掉了。

Answer 1

请楼上具体点啊，我也不算是java新手了，正经的搞java也有1年多了。

Answer 2

lz以前用过oracle吗？如果用过的话，看一下oracle的环境变量是否设置成了1.5的，那个会影响的

Answer 3

to 楼上，我的系统没有装oracle，装了tomcat5.5，它也是用1.5的，
不过我已经把系统环境变量都配置程1.4。2的了，还是不行。
不知道那里还要改？

Answer 4

试试
Eclipse3.2
VE 1.2
GEF 3.2
EMF 2.2.0