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

public class test {
	public static void main(String[] args) {
		Document doc = parseXmlFile("http://podcast.rtl.fr/grossestetes.xml", true);
		Element channel = (Element)doc.getElementsByTagName("channel").item(0);
		Element item = (Element)channel.getElementsByTagName("item").item(0);
		Element author = (Element)item.getElementsByTagNameNS("http://www.itunes.com/dtds/podcast-1.0.dtd", "author").item(0);
		System.out.println(author);
	}
	
	// Parses an XML file and returns a DOM document.
	// If validating is true, the contents is validated against the DTD
	// specified in the file.
	public static Document parseXmlFile(String filename, boolean validating) {
		try {
			// Create a builder factory
			DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
			factory.setValidating(validating);
			
			// Create the builder and parse the file
			Document doc = factory.newDocumentBuilder().parse(filename);
			return doc;
		} catch (SAXException e) {
			// A parsing error occurred; the xml input is not valid
			System.out.println(e);
		} catch (ParserConfigurationException e) {
			System.out.println(e);
		} catch (IOException e) {
			System.out.println(e);
		}
		return null;
	}
}