private void saveData() throws IOException { FileWriter fileWriter = new FileWriter(getFileName()); BufferedWriter bufferedWriter = new BufferedWriter(fileWriter); String[] row = new String[2]; for (Entry<String, String> entry : data.entrySet()) { row[0] = entry.getKey(); row[1] = entry.getValue(); bufferedWriter.write(EUtils.join(row, VALUE_DELIMITER)); bufferedWriter.newLine(); } bufferedWriter.close(); }