model = new TwoKnobsSliderModel(max, min, start, end); uiDelegate = new TwoKnobsSliderUI(this, model); attachListeners(); setDefault();
this(TwoKnobsSliderModel.DEFAULT_MIN, TwoKnobsSliderModel.DEFAULT_MAX, TwoKnobsSliderModel.DEFAULT_MIN, TwoKnobsSliderModel.DEFAULT_MAX);
    public TwoKnobsSlider(int min, int max, int start, int end)    {        model = new TwoKnobsSliderModel(max, min, start, end);        uiDelegate = new TwoKnobsSliderUI(this, model);        attachListeners();        setDefault();     }