private void processInput() {
        System.out.print("\nX – ukončenie hry, MA1 – označenie dlaždice v riadku A a stĺpci 1, OB4 – odkrytie dlaždice v riadku B a stĺpci 4"+
  "\nZadaj vstup: ");
  String retazec = readLine();
        try {
            handleInput(retazec);
        } catch (WrongFormatException ex) {
            Logger.getLogger(ConsoleUI.class.getName()).log(Level.SEVERE, null, ex);
        }

    }
 private void handleInput(String input) throws WrongFormatException {
        int row,column;

        Pattern pattern = Pattern.compile("(x)|([m,o])([a-"+(char)(field.getRowCount()+'a'-1)+"])(\\d+)");

        input = input.toLowerCase();
        Matcher matcher = pattern.matcher(input);

        if (matcher.matches() == true) {

            if(matcher.group(1) != null) {            // ak bolo zadane x
                System.out.println("Koniec");
                System.exit(0);
            }
            else {
                row = Integer.valueOf(matcher.group(3).charAt(0)) - 'a';
                column = Integer.valueOf(matcher.group(4)).intValue();
                if(column < field.getColumnCount()) {
                    if(matcher.group(2).endsWith("m"))
                        field.markTile(row, column);
                    else if(matcher.group(2).endsWith("o"))
                        field.openTile(row, column);
                }
                else throw new WrongFormatException("Zly vstup, opakujte volbu.");
            }
        }
        else {
            throw new WrongFormatException("Zly vstup, opakujte volbu.");
        }
    }
}