How do I decide which values to use for the JSlider FPS constants ?
It depends on your requirements. Too slow and the animation looks bad. Too fast and the computer can't keep up. Also monitors only refresh at a given frequency anyway. I think I saw in another posting 60 would be a good max.
Should I just copy paste these values into all my code that uses JSlider ?
Sliders can be used to something other than a FPS function. So the values you choose depend on your requirements.