Darryl Burke wrote:Hi Rebecca, and welcome to the Ranch! Whenever you post here, please use the code tags -- highlight your code and click the Code button above the editing area. Since you're new here, I've added the tags for you and you can see how much more readable the code is now.
You have a CirclesPanel class that isn't used in the GUI, where you add a simple JPanel with its background set to WHITE. That isn't going to automagically run the painting code in your custom class -- to use that, you have to actually construct an instance of the class and display it in the GUI.