🚀 go-pugleaf

I am trying to create as class to add image to a JTree and I found several
examples that override the paint in a class but I can not get this to work.
What do I need to do to this class?

 public class MyTree extends JTree {

    public void paint(Graphics g){
       super.paint(g);
      Image backGroundImage =
Toolkit.getDefaultToolkit().getImage("AGLMenuBkgd.jpg");
      Dimension d = getSize();
      g.drawImage(backGroundImage,0,0,d.width,d.height,this);
    }
  }