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:454)
   at org.netbeans.swing.tabcontrol.DefaultTabDataModel.setText(DefaultTabDataModel.java:159)
   at org.netbeans.swing.tabcontrol.TabbedContainer.setTitleAt(TabbedContainer.java:701)
   at org.netbeans.core.windows.view.ui.TabbedHandler.topComponentNameChanged(TabbedHandler.java:236)
   at org.netbeans.core.windows.view.ui.AbstractModeContainer.updateName(AbstractModeContainer.java:216)
   at org.netbeans.core.windows.view.ModeView.updateName(ModeView.java:169)
   at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:359)
   at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:269)
   at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:245)
   at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:183)
   at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:123)
   at org.netbeans.core.windows.Central.topComponentDisplayNameChanged(Central.java:1559)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentDisplayNameChanged(WindowManagerImpl.java:1166)
   at org.netbeans.core.windows.WindowManagerImpl.topComponentHtmlDisplayNameChanged(WindowManagerImpl.java:1172)
   at org.openide.windows.TopComponent.setHtmlDisplayName(TopComponent.java:979)
   at org.openide.text.CloneableEditor$2.run(CloneableEditor.java:1017)
   at org.openide.util.Mutex.doEvent(Mutex.java:1335)
   at org.openide.util.Mutex.writeAccess(Mutex.java:452)
   at org.openide.text.CloneableEditor.updateName(CloneableEditor.java:1013)
   at org.openide.text.CloneableEditorSupport.updateTitles(CloneableEditorSupport.java:2362)
   at org.openide.text.CloneableEditorSupport.notifyModified(CloneableEditorSupport.java:1984)
   at org.netbeans.modules.java.JavaDataObject$JavaEditorSupport.notifyModified(JavaDataObject.java:181)
   at org.openide.text.CloneableEditorSupport.callNotifyModified(CloneableEditorSupport.java:1895)
   at org.openide.text.CloneableEditorSupport$Listener.vetoableChange(CloneableEditorSupport.java:2852)
   at org.netbeans.editor.BaseDocument.notifyModify(BaseDocument.java:1842)
   at org.netbeans.editor.BaseDocument.atomicUnlockImpl(BaseDocument.java:1801)
   at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:350)
   at org.netbeans.editor.BaseKit$DeleteCharAction.actionPerformed(BaseKit.java:1524)
   at org.netbeans.modules.editor.java.JavaKit$JavaDeleteCharAction.actionPerformed(JavaKit.java:726)
   at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:336)
   at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1633)
   at javax.swing.JComponent.processKeyBinding(JComponent.java:2851)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2886)
   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:131)
   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)