String msg = "Double expected in line: " + fTokenizer.lineno(); throw new IOException(msg);
else { throw new IOException("Double expected in line: " + fTokenizer.lineno()); }
	public double readDouble() throws IOException {		int token = fTokenizer.nextToken();		if (token == StreamTokenizer.TT_NUMBER) {			return fTokenizer.nval;		}		String msg = "Double expected in line: " + fTokenizer.lineno();		throw new IOException(msg);	}