How to update my screen in javafx ?

Answer 1

Oh, you're trying to implement an animation. Take a look at this tutorial, it's from an old version but I'm sure you can find more material on the internet if you search for 'animation javafx'...
https://docs.oracle.com/javafx/2/animations/jfxpub-animations.htm

Answer 2

Oooh, that's hard to tell without some details. And without a minimal working example, which unfortunately won't run on the playground.

Answer 3

Yes you undrestand my aim very good we can be good friends
Thanks
I coding a program about this issu that send you soon to undrestand problem seems you are a very good programmer nice to meet you

Answer 4

Whether reside a function or class in javafx to perform it(update screen )
For example when i want to draw a circle that will move in scene .
How ????
Thanks