private void initLabel(){
        final Dimension labelDim = new Dimension(150, 20);
        totalQuestions = new JLabel("Total questions: ");
        totalQuestions.setSize(labelDim);

        numberTotQuestions = new JLabel("0");
        numberTotQuestions.setSize(labelDim);

        currentQuestions = new JLabel("Current question: ");
        currentQuestions.setSize(labelDim);

        numberOfCurQuestion = new JLabel ("0");
        numberOfCurQuestion.setSize(labelDim);

        totalRepetitions = new JLabel("Total repetition");
        totalRepetitions.setSize(labelDim);

        numberTotRepetitions = new JLabel("0");
        numberTotRepetitions.setSize(labelDim);

        frame.add(totalQuestions);
        frame.add(numberTotQuestions);
        frame.add(currentQuestions);
        frame.add(numberOfCurQuestion);
        frame.add(totalRepetitions);
        frame.add(numberTotRepetitions);
    }