How to implement code for get the xml data and save inot xml file?

How to implement code for below xml file

<root>
  <keys>
    <key>
      <Question>Is the color of the car</Question>
      <Ans>black?</Ans>
    </key>
    <key>
      <Question>Is the color of the car</Question>
      <Ans>black?</Ans>
    </key>
    <key>
      <Question>Is the news paper </Question>
      <Ans>wallstreet?</Ans>
    </key>
    <key>
      <Question>fragrance odor</Question>
      <Ans>Lavendor?</Ans>
    </key>
    <key>
      <Question>Is the baggage collector availa开发者_StackOverflow中文版ble</Question>
      <Ans></Ans>
    </key>
  </keys>
</root>

Display on the screen as:

List form Is the color of the car black? Check box Is the baggage collector available? Check box

If the check box is checked - Yes otherwise value is no.

On save button: we need to save it into a xml file. So any one help me to solve the problem.

---

By your question it appears you want to fetch contents of XML. For that you need to parse the XML. Create an XMLClass.java

public class XMLfunctions {

public final static Document XMLfromString(String xml){

    Document doc = null;

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    try {

        DocumentBuilder db = dbf.newDocumentBuilder();

        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(xml));
        doc = db.parse(is); 

    } catch (ParserConfigurationException e) {
        System.out.println("XML parse error: " + e.getMessage());
        return null;
    } catch (SAXException e) {
        System.out.println("Wrong XML file structure: " + e.getMessage());
        return null;
    } catch (IOException e) {
        System.out.println("I/O exeption: " + e.getMessage());
        return null;
    }

    return doc;

}

/** Returns element value
  * @param elem element (it is XML tag)
  * @return Element value otherwise empty String
  */
 public final static String getElementValue( Node elem ) {
     Node kid;
     if( elem != null){
         if (elem.hasChildNodes()){
             for( kid = elem.getFirstChild(); kid != null; kid = kid.getNextSibling() ){
                 if( kid.getNodeType() == Node.TEXT_NODE  ){
                     return kid.getNodeValue();
                 }
             }
         }
     }
     return "";
 }

 public static String getXML(int s, int y){  
        String line = null;

        try {

            DefaultHttpClient httpClient = new DefaultHttpClient();
            String link = "//YOUR URL HERE" add LIMITS IF ANY
                 for ex: String link = "www.ab.com/index.php?action=gq&start="+s+"&limit="+y;
// it will give you values from 1 to 10 or 1 to 50 whatever you mention         
            HttpPost httpPost = new HttpPost(link);

            System.out.println("Httppost="+httpPost);

            HttpResponse httpResponse = httpClient.execute(httpPost);

            HttpEntity httpEntity = httpResponse.getEntity();

            System.out.println("HttpEntity="+httpEntity);

            line = EntityUtils.toString(httpEntity);

            System.out.println("Line="+line);

        } catch (UnsupportedEncodingException e) {
            line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
        } catch (MalformedURLException e) {
            line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
        } catch (IOException e) {
            line = "<results status=\"error\"><msg>Can't connect to server</msg></results>";
        }

        return line;

}

Then in other class call this getXML function

declare int s and int y with some value

   String xmls = XMLfunctions2.getXML(loginid);    

    Document docs = XMLfunctions2.XMLfromString(xmls);
    NodeList node = docs.getElementsByTagName("start");

for (int i = 0; i < node.getLength(); i++) {    

        org.w3c.dom.Element e = (org.w3c.dom.Element)node.item(i);
        if(i==0)

        {
            quest= XMLfunctions.getValue(e, "Question");
            ans=XMLfunctions.getValue(e, "Answer");
            key=XMLfunctions.getValue(e, "key");

        }

}