Method for addition of slider with buttons implemented

        return inputField;

    }

    public JTextField addSliderButtonedWithVal(int max, double step, ActionListener inputAction) {

        JSlider slider = addSlider(max);

        IntValueRange range = max == -1 ? null : new IntValueRange(0, max);

        JTextField inputField = addFormattedInputFieldButtoned(range, step, inputAction);

        connectSliderWithTextField(slider, max, inputField);

        return inputField;

    }

    private void connectSliderWithTextField(JSlider slider, int max, JTextField inputField) {

        slider.addChangeListener((ChangeEvent ce) -> {

            if (max == -1) {