public void writeXML() throws Exception
    {
        ArrayList<Frame> frameList = new ArrayList<Frame>();
        frameList = readFile();

        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder;

        try
        {
            dBuilder = dbFactory.newDocumentBuilder();
            Document doc = dBuilder.newDocument();

            // append stuff

            TransformerFactory transformerFactory = TransformerFactory.newInstance();

            Transformer transformer = transformerFactory.newTransformer();

            //transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            DOMSource source = new DOMSource(doc);

            StreamResult console = new StreamResult(System.out);
            StreamResult file = new StreamResult(new File("file.xml"));

            //transformer.transform(source, console);
            transformer.transform(source, file);
            System.out.println("DONE");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }