private static void error(URL base, StreamTokenizer in, String msg) throws IOException { throw new IOException(base + ":" + in.lineno() + ": " + msg);
private static void error(Throwable t) { System.err.println(">> PolicyFile"); t.printStackTrace(System.err);
    private static void error(URL base, StreamTokenizer in, String msg)            throws IOException {        throw new IOException(base + ":" + in.lineno() + ": " + msg);    }