public InputSource resolveEntity(String publicID,
    String systemID) 
{
            if (systemID != null)
            {
                String systemFileName = systemID;
                if (systemFileName.indexOf("/")  > 0)
                {
                    systemFileName = systemFileName.substring(systemFileName.lastIndexOf("/") + 1, systemFileName
                        .length());
                }
                ClassLoader classLoader = getClass().getClassLoader();
                URL dtdURL = classLoader.getResource("javax/servlet/jsp/resources/" + systemFileName);
                if (dtdURL == null)
                {
                    return null;
                }
                // Return local copy of the dtd
                try
                {
                    return new InputSource(dtdURL.openStream());
                }
                catch (IOException e)
                {
                    // return null
                }
            }
            // If no match, returning null makes process continue normally
            return null;
}