Jdeveloper 发生意外的严重错误

Question

我的 Jdeveloper 不断提示我这个错误弹出窗口。

错误详情如下：-

错误信息详情如下：-

Exception while updating action Block Selection
java.lang.NoClassDefFoundError: oracle/javatools/editor/EditorSelectionColumns
  o.i.ceditor.CodeEditorController.update(CodeEditorController.java:462)
  o.i.controller.IdeAction.updateAction(IdeAction.java:787)
  o.i.controller.IdeAction.updateAction(IdeAction.java:749)
  o.i.view.View.updateAction(View.java:390)
  o.i.view.View.updateToolbarActions(View.java:384)
  o.i.view.View.updateVisibleActions(View.java:214)
  com.oracle.jdeveloper.nbwindowsystem.NbMainWindow$UpdateVisibleActions.fireUpdate(NbMainWindow.java:1794)
  com.oracle.jdeveloper.nbwindowsystem.NbMainWindow$UpdateVisibleActions.actionPerformed(NbMainWindow.java:1779)
  jx.s.Timer.fireActionPerformed(Timer.java:313)
  jx.s.Timer$DoPostEvent.run(Timer.java:245)
  j.a.event.InvocationEvent.dispatch(InvocationEvent.java:311)
  j.a.EventQueue.dispatchEventImpl(EventQueue.java:756)
  j.a.EventQueue.access$500(EventQueue.java:97)
  j.a.EventQueue$3.run(EventQueue.java:709)
  j.a.EventQueue$3.run(EventQueue.java:703)
  j.security.AccessController.doPrivileged(Native Method)
  j.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
  j.a.EventQueue.dispatchEvent(EventQueue.java:726)
  o.javatools.internal.ui.EventQueueWrapper._dispatchEvent(EventQueueWrapper.java:169)
  o.javatools.internal.ui.EventQueueWrapper.dispatchEvent(EventQueueWrapper.java:151)
  j.a.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
  j.a.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
  j.a.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
  j.a.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
  j.a.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
  j.a.EventDispatchThread.run(EventDispatchThread.java:82)

我不知道问题出在哪里。通过取消弹出窗口，它成功了几次。但我认为最好找到解决方案。

Answer 1

这是 jDeveloper 中相当常规的屏幕，我每天至少看到两次。我单击“保存并退出”（这不会执行任何操作）并继续工作。

Answer 2

就我而言，通过单击“保存所有文件并退出”，我可以继续工作，但是当我重新启动程序时，我丢失了所有更改。 解决办法是再次重新安装Jdeveloper。