code: public void parse (String systemId)
      throws org.xml.sax.SAXException, IOException
    {
      parse(new InputSource(systemId));
    }
docs: Parse a document.
  
  @param systemId The system identifier as a fully-qualified URI.
  @throws org.xml.sax.SAXException Any SAX exception, possibly
  wrapping another exception.
  @throws java.io.IOException An IO exception from the parser,
  possibly from a byte stream or character stream
  supplied by the application.
  @see org.xml.sax.XMLReader#parse(java.lang.String)