Read RSS feeds by Using Java

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/**
*
* @author vijay

*
*/
import java.net.URL;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.CharacterData;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class RSSReader {

private static RSSReader instance = null;

private RSSReader() {
}

public static RSSReader getInstance() {
if(instance == null) {
instance = new RSSReader();
}
return instance;
}

public void writeNews() {
try {

DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
URL u = new URL(“http://pratyush.in/feed/rss”); // your feed url

Document doc = builder.parse(u.openStream());

NodeList nodes = doc.getElementsByTagName(“item”);

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

Element element = (Element)nodes.item(i);
System.out.println(“Title: ” + getElementValue(element,”title”));
System.out.println(“Link: ” + getElementValue(element,”link”));
System.out.println(“Publish Date: ” + getElementValue(element,”pubDate”));
System.out.println(“author: ” + getElementValue(element,”dc:creator”));
System.out.println(“comments: ” + getElementValue(element,”wfw:comment”));
System.out.println(“description: ” + getElementValue(element,”description”));
System.out.println();
}//for
}//try
catch(Exception ex) {
ex.printStackTrace();
}

}

private String getCharacterDataFromElement(Element e) {
try {
Node child = e.getFirstChild();
if(child instanceof CharacterData) {
CharacterData cd = (CharacterData) child;
return cd.getData();
}
}
catch(Exception ex) {

}
return “”;
} //private String getCharacterDataFromElement

protected float getFloat(String value) {
if(value != null && !value.equals(“”)) {
return Float.parseFloat(value);
}
return 0;
}

protected String getElementValue(Element parent,String label) {
return getCharacterDataFromElement((Element)parent.getElementsByTagName(label).item(0));
}

public static void main(String[] args) {
RSSReader reader = RSSReader.getInstance();
reader.writeNews();
}
}

Note: this is not my program, i copied from java forums, after success full running i feel that it may help for my blog reader. i don`t  have any rights on this program.

you can find original post @ http://forums.sun.com/thread.jspa?threadID=5275485