Hi, I am using Swing for my GUI application
I a have JLabel and a icon that I modiy that when a tree is clicked
That works fine, but when I modify them from another class, screen gets flashes ?

Main Class -> Produces GUI class (JLabel updating works fine)
Main Class -> Produces PickBehaviour (java3D)

that PichHebavious modifies Jlabel and icon by owner.GUI

its owner is my Main class. That flashes screen and my model moves a little bit.

Any Idea, how can I avoid it ?