Simple RSS reader USING JAVA (JDOM Parser)


import java.io.*;
import java.util.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;

public class XMLController {
  Hashtable theList;
  DocumentBuilderFactory docBuilderFactory;
  DocumentBuilder docBuilder;
  Document doc;
  NodeList listOfRssItems;
  NodeList Channel;

  XMLController(String xmlFile) {
    try {
      theList = new Hashtable();
      docBuilderFactory = DocumentBuilderFactory.newInstance();
      docBuilder = docBuilderFactory.newDocumentBuilder();
      doc = docBuilder.parse(new File(xmlFile));
      doc.getDocumentElement().normalize();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  int noOfRssItems() {
    return listOfRssItems.getLength();
  }

  /**
   * getRssItemsFromXML
   *
   * @return ArrayList
   */
  public String getRssItemsFromXML() {
    String contenter = "";
    if (doc != null) {
      Channel = doc.getElementsByTagName("channel");
      for (int ItemNo = 0; ItemNo < Channel.getLength(); ItemNo++) {
        Node ChNode = Channel.item(ItemNo);
        if (ChNode.getNodeType() == Node.ELEMENT_NODE) {
          Element aElement = (Element) ChNode;
          NodeList ItemNameList = aElement.getElementsByTagName("link");
          Element ItemNameElement = (Element) ItemNameList.item(0);
          NodeList ItemNamesList = ItemNameElement.getChildNodes();
          String linker = ( (Node) ItemNamesList.item(0)).getNodeValue().trim();
          ItemNameList = aElement.getElementsByTagName("title");
          ItemNameElement = (Element) ItemNameList.item(0);
          ItemNamesList = ItemNameElement.getChildNodes();
          contenter = contenter + "  " +
              ( (Node) ItemNamesList.item(0)).getNodeValue().trim() +
              "
";
        }
      }
      listOfRssItems = doc.getElementsByTagName("item");
      for (int ItemNo = 0; ItemNo < noOfRssItems(); ItemNo++) {
        Node ItemNode = listOfRssItems.item(ItemNo);
        if (ItemNode.getNodeType() == Node.ELEMENT_NODE) {
          Element aElement = (Element) ItemNode;
          NodeList ItemNameList = aElement.getElementsByTagName("link");
          Element ItemNameElement = (Element) ItemNameList.item(0);
          NodeList ItemNamesList = ItemNameElement.getChildNodes();
          String linker = ( (Node) ItemNamesList.item(0)).getNodeValue().trim();
          ItemNameList = aElement.getElementsByTagName("title");
          ItemNameElement = (Element) ItemNameList.item(0);
          ItemNamesList = ItemNameElement.getChildNodes();
          contenter = contenter + "  " +
              ( (Node) ItemNamesList.item(0)).getNodeValue().trim() +
              "
";
          ItemNameList = aElement.getElementsByTagName("description");
          ItemNameElement = (Element) ItemNameList.item(0);
          ItemNamesList = ItemNameElement.getChildNodes();
          contenter = contenter + "" +
              ( (Node) ItemNamesList.item(0)).getNodeValue().trim() + "
";
        }
      }
    }
    System.out.println(contenter);
    return contenter;
  }