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:188)
   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$2.run(CloneableEditor.java:1017)
   at org.openide.util.Mutex.doEvent(Mutex.java:1338)
   at org.openide.util.Mutex.writeAccess(Mutex.java:452)
   at org.openide.text.CloneableEditor.updateName(CloneableEditor.java:1013)
   at org.openide.text.CloneableEditorSupport.updateTitles(CloneableEditorSupport.java:2362)
   at org.openide.text.CloneableEditorSupport.notifyUnmodified(CloneableEditorSupport.java:1870)
   at org.netbeans.modules.java.JavaDataObject$JavaEditorSupport.notifyUnmodified(JavaDataObject.java:189)
   at org.openide.text.CloneableEditorSupport.callNotifyUnmodified(CloneableEditorSupport.java:1911)
   at org.openide.text.CloneableEditorSupport$1SaveAsReader.after(CloneableEditorSupport.java:1057)
   at org.openide.text.CloneableEditorSupport.saveDocument(CloneableEditorSupport.java:1074)
   at org.openide.text.DataEditorSupport.superSaveDoc(DataEditorSupport.java:511)
   at org.openide.text.DataEditorSupport$SaveImpl.run(DataEditorSupport.java:1186)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:122)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:539)
   at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:557)
   at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:507)
   at org.openide.text.CloneableEditorSupport.canClose(CloneableEditorSupport.java:1402)
   at org.openide.text.DataEditorSupport.canClose(DataEditorSupport.java:404)
   at org.openide.text.CloneableEditor.closeLast(CloneableEditor.java:852)
   at org.openide.windows.CloneableTopComponent$Ref.unregister(CloneableTopComponent.java:403)
   at org.openide.windows.CloneableTopComponent$Ref.access$300(CloneableTopComponent.java:267)
   at org.openide.windows.CloneableTopComponent.canClose(CloneableTopComponent.java:206)
   at org.openide.text.CloneableEditor.canClose(CloneableEditor.java:193)
   at org.netbeans.core.windows.Central.removeModeTopComponent(Central.java:950)
   at org.netbeans.core.windows.Central.userClosedTopComponent(Central.java:1986)
   at org.netbeans.core.windows.view.DefaultView.userClosedTopComponent(DefaultView.java:741)
   at org.netbeans.core.windows.view.ui.TabbedHandler.actionPerformed(TabbedHandler.java:321)
   at org.netbeans.swing.tabcontrol.TabbedContainer.postActionEvent(TabbedContainer.java:692)
   at org.netbeans.swing.tabcontrol.TabbedContainerUI.shouldPerformAction(TabbedContainerUI.java:162)
   at org.netbeans.swing.tabcontrol.plaf.DefaultTabbedContainerUI.access$2700(DefaultTabbedContainerUI.java:109)
   at org.netbeans.swing.tabcontrol.plaf.DefaultTabbedContainerUI$DisplayerActionListener.actionPerformed(DefaultTabbedContainerUI.java:1266)
   at org.netbeans.swing.tabcontrol.TabDisplayer.postActionEvent(TabDisplayer.java:577)
   at org.netbeans.swing.tabcontrol.TabDisplayerUI.shouldPerformAction(TabDisplayerUI.java:185)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI.access$1500(BasicTabDisplayerUI.java:117)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI$BasicDisplayerMouseListener.performCommand(BasicTabDisplayerUI.java:728)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI$BasicDisplayerMouseListener.potentialCommand(BasicTabDisplayerUI.java:713)
   at org.netbeans.swing.tabcontrol.plaf.BasicTabDisplayerUI$BasicDisplayerMouseListener.mouseReleased(BasicTabDisplayerUI.java:761)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
   at java.awt.Component.processMouseEvent(Component.java:6348)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3255)
   at java.awt.Component.processEvent(Component.java:6113)
   at java.awt.Container.processEvent(Container.java:2085)
   at java.awt.Component.dispatchEventImpl(Component.java:4714)
   at java.awt.Container.dispatchEventImpl(Container.java:2143)
   at java.awt.Component.dispatchEvent(Component.java:4544)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4618)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4282)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4212)
   at java.awt.Container.dispatchEventImpl(Container.java:2129)
   at java.awt.Window.dispatchEventImpl(Window.java:2475)
   at java.awt.Component.dispatchEvent(Component.java:4544)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:635)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:134)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)