public class OurHandler extends HandlerBase { //subclassing HandlerBase
  
       public void startDocument ()
             {
   //our implementation of the method, overriding  HandlerBase
   }

   public void endDocument ()
              {
                     //our implementation of the method, overriding  HandlerBase
             }
  
       public void startElement (String name, AttributeList atts)
            {
                     //our implementation of the method, overriding  HandlerBase
            }
  
       public void endElement (String name)
            {
                     //our implementation of the method, overriding  HandlerBase
             }

       public void characters (char ch[], int start, int length)
             {
                     //our implementation of the method, overriding  HandlerBase
             }
  }