JSP and XML .data store nd retrieve

JSP store for data into xml:

<%@page import="java.io.*,org.w3c.dom.*,javax.xml.parsers.*,javax.xml.transform.*, javax.xml.transform.dom.*,javax.xml.transform.stream.*"%>  

  <%!

      public void createXmlTree(Document doc,String name,String address,String contact,String email) throws Exception {
        System.out.println(name);
        Element root = doc.createElement("Student");
        doc.appendChild(root);

        Element child1 = doc.createElement("Name");
        root.appendChild(child1);

        Text text1 = doc.createTextNode(name);
        child1.appendChild(text1);

        Element child2 = doc.createElement("Address");
        root.appendChild(child2);

        Text text2 = doc.createTextNode(address);
        child2.appendChild(text2);

        Element child3 = doc.createElement("ContactNo");
        root.appendChild(child3);

        Text text3 = doc.createTextNode(contact);
        child3.appendChild(text3);

        Element child4 = doc.createElement("Email");
        root.appendChild(child4);

        Text text4 = doc.createTextNode(email);
        child4.appendChild(text4);

        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer();

        transformer.setOutputProperty(OutputKeys.INDENT, "yes");


        StringWriter sw = new StringWriter();
        StreamResult result = new StreamResult(sw);
        DOMSource source = new DOMSource(doc);
        transformer.transform(source, result);
        String xmlString = sw.toString();

        File file = new File("c:/new.xml");
        BufferedWriter bw = new BufferedWriter(new FileWriter(file));
        bw.write(xmlString);
        bw.flush();
        bw.close();

    }%>


<%
String name="roseindia";
      String address="Delhi";
      String contact="111111";
      String email="[email protected]";


  try
  {
      System.out.println(name);
    DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = builderFactory.newDocumentBuilder();
        Document doc = docBuilder.newDocument();
       createXmlTree(doc,name,address,contact,email);

    out.println("<b>Xml File Created Successfully</b>");
  }
  catch(Exception e)
  {
    System.out.println(e);
  }

  %>

Retrieve data from xml

Thank you sir for ur precious reply: xml file creates successfully,but i want data entered by user to be stored in xml file.here you have entered data in JSP file itself.what if i want to store data entered by user itself. Please take example to create one or two textboxes to enter data and store in xml. thanking you a lot