Method for addition of slider implemented

        return slider;

    }

    public JSlider addSlider(int max) {

        GridBagConstraints c = new GridBagConstraints();

        c.gridwidth = SLIDER_WIDTH;

        c.gridx = col;

        col += SLIDER_WIDTH;

        c.gridy = row;

        c.anchor = GridBagConstraints.CENTER;

        c.fill = GridBagConstraints.HORIZONTAL;

        JSlider slider = new JSlider();

        if (max == -1) { // percents

            slider.setMaximum(100);

        } else { // absolute values

            slider.setMaximum(max);

        }

        controlPanel.add(slider, c);

        return slider;

    }

    public JFormattedTextField addFormattedInputField(IntValueRange range, ActionListener inputAction) {

        GridBagConstraints c = new GridBagConstraints();

        c.gridwidth = 2;