code: public static int eval( String url, String text )
          throws IOException
      {
          String returnValue = null;
          if ( url.startsWith( "http:" ) ) {
              returnValue = doHttp( url, text );
          } else if ( url.startsWith( "bsh:" ) ) {
              returnValue = doBsh( url, text );
          } else
              throw new IOException( "Unrecognized URL type."
                  +"Scheme must be http:// or bsh://");
  
          if ( null != returnValue )
              return Integer.parseInt( returnValue );
          return 0;
      }
docs: Evaluate text in the interpreter at url, returning a possible integer
  return value.