javax.swing.text.BadLocationException: Invalid offset=-48
        at org.netbeans.editor.DocumentContent.checkBounds(DocumentContent.java:270)
        at org.netbeans.editor.DocumentContent.getChars(DocumentContent.java:109)
        at javax.swing.text.AbstractDocument.getText(AbstractDocument.java:812)
        at org.netbeans.editor.LineRootElement.prepareSyntax(LineRootElement.java:228)
        at org.netbeans.editor.BaseDocument.prepareSyntax(BaseDocument.java:1229)
        at org.netbeans.editor.DrawEngine.initInfo(DrawEngine.java:238)
        at org.netbeans.editor.DrawEngine.draw(DrawEngine.java:1051)
        at org.netbeans.editor.LeafView.paintAreas(LeafView.java:154)
        at org.netbeans.editor.BaseView.paint(BaseView.java:129)
        at org.netbeans.editor.BaseTextUI$RootView.paint(BaseTextUI.java:602)
        at org.netbeans.editor.BaseTextUI.paintRegion(BaseTextUI.java:244)
        at org.netbeans.editor.EditorUI.paint(EditorUI.java:1499)
        at org.netbeans.editor.BaseTextUI.paint(BaseTextUI.java:222)
        at javax.swing.plaf.ComponentUI.update(ComponentUI.java:142)
        at javax.swing.JComponent.paintComponent(JComponent.java:541)
        at javax.swing.JComponent.paint(JComponent.java:808)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JViewport.paint(JViewport.java:722)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at org.netbeans.core.windows.frames.CloseButtonTabbedPane.paint(CloseButtonTabbedPane.java:209)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at org.netbeans.core.windows.frames.PerimeterPane.paint(PerimeterPane.java:103)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JLayeredPane.paint(JLayeredPane.java:557)
        at javax.swing.JComponent.paintChildren(JComponent.java:647)
        at javax.swing.JComponent.paint(JComponent.java:817)
        at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4795)
        at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4748)
        at javax.swing.JComponent._paintImmediately(JComponent.java:4692)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4495)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:410)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:117)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)