RSSLister

import javax.xml.stream.*;
import java.net.*;
import java.io.*;

 
public class RSSLister {

  public static void main(String[] args) {
        
    if (args.length == 0) {
      System.err.println("Usage: java RSSLister url" );
      return;    
    }
        
    try {

      InputStream in;
      try {
        URL u = new URL(args[0]);
        in = u.openStream();
      }
      catch (MalformedURLException ex) {
          // Maybe it's a file name
          in = new FileInputStream(args[0]);
      }

      XMLInputFactory factory = XMLInputFactory.newInstance();
      XMLStreamReader parser = factory.createXMLStreamReader(in);
        
      boolean printing = false;
      for (int event = parser.next(); 
           parser.hasNext(); 
           event = parser.next()) {
         if (event == XMLStreamConstants.START_ELEMENT) {
             String name = parser.getLocalName();
             if (name.equals("title")) printing = true;
         }
         else if (event == XMLStreamConstants.END_ELEMENT) {
             String name = parser.getLocalName();
             if (name.equals("title")) printing = false;
         }
         else if (parser.hasText() && event != XMLStreamConstants.COMMENT) {
             if (printing) System.out.println(parser.getText());
         }
      }  
      parser.close();
         
    }
    catch (XMLStreamException ex) {
       System.out.println(ex);  
    }
    catch (IOException ex) {
      System.out.println("IOException while parsing " + args[0]);   
    }
        
  }

}