void save_OverwriteXml_element() {
        DocumentBuilderFactory docFact = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuild = null;
        try {
            docBuild = docFact.newDocumentBuilder();
            Document doc = docBuild.parse(xmlFileLocation);

            doc.getDocumentElement().normalize();
            NodeList nodes = doc.getElementsByTagName("item");

            for (int i = 0; i < nodes.getLength(); i++) {
                NodeList subChildNodes = nodes.item(i).getChildNodes();

                System.out.print(subChildNodes.item(6).getTextContent());
                if(subChildNodes.item(3).getTextContent().equals(serrial) && subChildNodes.item(5).getTextContent().equals(serrialnumber)) {
                    //fontos 1-ről kezdjük a számozást és az enterek is számitanak
                    if(producer!=null)subChildNodes.item(1).setTextContent(producer);
                    if(socket!=null)subChildNodes.item(7).setTextContent(socket);
                    if(clock!=0)subChildNodes.item(9).setTextContent(Integer.valueOf(clock).toString());
                    if(cpu_cores!=0)subChildNodes.item(11).setTextContent(Integer.valueOf(cpu_cores).toString());
                    if(manufactorytech!=0)subChildNodes.item(13).setTextContent(Integer.valueOf(manufactorytech).toString());
                }
            }

            Transformer transformer = TransformerFactory.newInstance().newTransformer();
            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

            DOMSource source = new DOMSource(doc);
            StringWriter writer = new StringWriter();
            StreamResult result = new StreamResult(writer);
            transformer.transform(source, result);

            String strTemp = writer.toString();

            FileWriter fileWriter = new FileWriter(xmlFileLocation);
            BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

            bufferedWriter.write(strTemp);
            bufferedWriter.flush();
            bufferedWriter.close();

        } catch(Exception ex) {

        }
}