public void save(String fileName) {
		try {
			OutputStream file = new FileOutputStream(fileName);
			OutputStream buffer = new BufferedOutputStream(file);
			ObjectOutput output = new ObjectOutputStream(buffer);
			output.writeObject(map.getData());
			
			output.close();
			buffer.close();
			file.close();

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}