How to make JavaFX Slider to move in discrete steps?

Question

I am making a GUI using JavaFx and I need sliders that only allow integers to ever be selected.

I know I can use snapToTicks, but while pulling the "knob", it can still represent a non-integer value. I would like to get rid of that. It messes up other components linked to it.

Basically, I want something like Swing's JSlider, but with JavaFx. Is it possible? I have been searching but I can't find anything.

Answer 1

You can simply add a listener to the valueProperty of the Slider and then you can either set the integer value of the new Number value:

slider.valueProperty().addListener((obs, oldval, newVal) -> 
    slider.setValue(newVal.intValue()));

or alternatively you can use integer rounding using Math.round:

slider.valueProperty().addListener((obs, oldval, newVal) ->
    slider.setValue(Math.round(newVal.doubleValue())));