java and xml problem

hi, i need to write a java program that generates an xml file as follows:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ocs="http://ocs.ztesoft.com">
<soapenv:Header>
<AuthHeader xmlns="http://ZTE.com/webservices/">
<Username>aaa</Username>
<Password>vvv</Password>
</AuthHeader>
</soapenv:Header>
<soapenv:Body>
<ocs:doService>
<ocs:in0>
<![CDATA[
<?xml version="1.0" encoding="UTF-8"?>

---------

i have witten a program in java, but im not getting the same format as it is here. this is what i have written

import java.io.*;

import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;

import org.w3c.dom.*;

public class CreatXMLFile {
public static void main(String[] args) throws Exception {
//BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
//System.out.print("Enter number to add elements in your XML file: ");
//String str = bf.readLine();
int no = Integer.parseInt("1");
//System.out.print("Enter root: ");
//String root = bf.readLine();
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.newDocument();
Element rootElement = document.createElement("zsmart");
document.appendChild(rootElement);
Element child = document.createElement("Data");
rootElement.appendChild(child);
Element child1 = document.createElement("Header");
rootElement.appendChild(child1);
Element child2 = document.createElement("ACTION_ID");
child.appendChild(child2);
Text text = document.createTextNode("ModDefLang");
child2.appendChild(text);
//Comment comment = document.createComment("Employee in roseindia");
//child.appendChild(comment);

Element element = document.createElement("REQUEST_ID");
child.appendChild(element);

Text text1 = document.createTextNode("002009031100001");
element.appendChild(text1);

/* Element chilE = document.createElement("Id");
chilE.setAttribute("name", "Vineet");
rootElement.appendChild(chilE);


Text text12 = document.createTextNode("status");
chilE.appendChild(text12);*/

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

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

// create string from xml tree
StringWriter sw = new StringWriter();
StreamResult result = new StreamResult(sw);
DOMSource source = new DOMSource(document);
transformer.transform(source, result);
String xmlString = sw.toString();

File file = new File("c:/newxml.xml");
BufferedWriter bw = new BufferedWriter
(new OutputStreamWriter(new FileOutputStream(file)));
bw.write(xmlString);
bw.flush();
bw.close();
}


}

---------
the output i am getting is as follows.

<?xml version="1.0" encoding="UTF-8"?>
<zsmart>
<Data>
<ACTION_ID>ModDefLang</ACTION_ID>
<REQUEST_ID>002009031100001</REQUEST_ID>
</Data>
<Header/>
</zsmart>

can you plz help...