java.lang.IndexOutOfBoundsException: Index: 3, Size: 3
   at java.util.ArrayList.RangeCheck(ArrayList.java:547)
   at java.util.ArrayList.get(ArrayList.java:322)
   at org.netbeans.swing.tabcontrol.DefaultTabDataModel.fireContentsChanged(DefaultTabDataModel.java:457)
   at org.netbeans.swing.tabcontrol.DefaultTabDataModel.setText(DefaultTabDataModel.java:162)
   at org.netbeans.swing.tabcontrol.TabbedContainer.setTitleAt(TabbedContainer.java:704)
   at org.netbeans.core.windows.view.ui.TabbedHandler.topComponentNameChanged(TabbedHandler.java:239)
   at org.netbeans.core.windows.view.ui.AbstractModeContainer.updateName(AbstractModeContainer.java:191)
   at org.netbeans.core.windows.view.ModeView.updateName(ModeView.java:172)
   at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:362)
   at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:272)
   at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:248)
   at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:186)
   at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:126)
   at org.netbeans.core.windows.Central.topComponentDisplayNameChanged(Central.java:1562)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentDisplayNameChanged(WindowManagerImpl.java:1169)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentHtmlDisplayNameChanged(WindowManagerImpl.java:1175)
   at org.openide.windows.TopComponent.setHtmlDisplayName(TopComponent.java:982)
   at org.openide.text.CloneableEditor$2.run(CloneableEditor.java:1020)
   at org.openide.util.Mutex.doEvent(Mutex.java:1341)
   at org.openide.util.Mutex.writeAccess(Mutex.java:455)
   at org.openide.text.CloneableEditor.updateName(CloneableEditor.java:1016)
   at org.openide.text.CloneableEditorSupport.updateTitles(CloneableEditorSupport.java:2365)
   at org.openide.text.CloneableEditorSupport.notifyUnmodified(CloneableEditorSupport.java:1873)
   at org.netbeans.modules.java.JavaDataObject$JavaEditorSupport.notifyUnmodified(JavaDataObject.java:192)
   at org.openide.text.CloneableEditorSupport.callNotifyUnmodified(CloneableEditorSupport.java:1914)
   at org.openide.text.CloneableEditorSupport$1SaveAsReader.after(CloneableEditorSupport.java:1060)
   at org.openide.text.CloneableEditorSupport.saveDocument(CloneableEditorSupport.java:1077)
   at org.openide.text.DataEditorSupport.superSaveDoc(DataEditorSupport.java:514)
   at org.openide.text.DataEditorSupport$SaveImpl.run(DataEditorSupport.java:1189)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:125)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:542)
   at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:560)
   at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:510)
   at org.netbeans.modules.java.JavaDataObject$JavaEditorSupport$Environment$SaveSupport.save(JavaDataObject.java:135)
   at org.openide.actions.SaveAction.performAction(SaveAction.java:115)
   at org.openide.actions.SaveAction.performAction(SaveAction.java:95)
   at org.openide.actions.SaveAction$Delegate.actionPerformed(SaveAction.java:232)
   at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:231)
   at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:240)
   at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:109)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:93)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.awt.GeneralAction$DelegateAction.actionPerformed(GeneralAction.java:219)
   at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:1109)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2897)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2814)
   at java.awt.Component.processEvent(Component.java:6040)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
   at java.awt.Component.dispatchEventImpl(Component.java:4502)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:137)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)