public void write(String fileName) throws IOException {
		try (BufferedWriter bw = new BufferedWriter(new FileWriter(fileName))) {
			Iterator<Entry<String, String>> it = map.entrySet().iterator();
			while (it.hasNext()) {
				Entry<String, String> pair = it.next();
				String line = pair.getKey() + "=" + pair.getValue() + "\n";
				bw.write(line);
			}
		}
	}