How to update the value in xml file using transformer after setNodeValue

Hi,
This is my code
I want to set update the values in xml file using transformer..
Any one can help me
This is my Xml file
<?xml version="1.0" encoding="UTF-8"?>
<place>
<name>chennai</name>
</place>
Jsp Page
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@ page import="javax.xml.parsers.DocumentBuilderFactory,
javax.xml.parsers.DocumentBuilder,org.w3c.dom.*,org.w3c.dom.Element"
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<% String str="";
String str1="";
try
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse("http://localhost:8084/XmlApplication1/sss.xml");
out.println("Before change");
NodeList n11 = doc.getElementsByTagName("name");
Node n22= n11.item(0).getFirstChild();
str1 = n22.getNodeValue();
out.println(str1);
out.println("After change");
String name = "Banglore";
NodeList nlst = doc.getElementsByTagName("name");
Node node= nlst.item(0).getFirstChild();
node.setNodeValue(name);
NodeList n1 = doc.getElementsByTagName("name");
Node n2= n1.item(0).getFirstChild();
str = n2.getNodeValue();
out.println(str);
catch(Exception e)
out.println(e) ;
%>
<h1><%=str%></h1>
<%--
This example uses JSTL, uncomment the taglib directive above.
To test, display the page like this: index.jsp?sayHello=true&name=Murphy
--%>
<%--
<c:if test="${param.sayHello}">

Hello ${param.name}!
</c:if>
--%>
</body>
</html>

hi check this exit...
IWO10012

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