Thank you for the responses! I am sorry, I was concerned the way I posted these with the commented code would be confusing.
When I run the code with the commented part uncommented, the mouseListener works fine. The program draws the graphic appropriately.
But when I run the program WITHOUT the mouseListener I cannot get the program to draw the StartChamber directly. The window appears,
but the background color is not set appropriately, and the starting chamber is not drawn. Not sure if I explained it better?
Thanks again for the help!
This is the JFrame class that adds the panel
Here is the StartChamber class that constructs the first room