I am creating some components that extend JPanel, and don't know whether to use a Pane or a Panel suffix.
First, I don't think it matters a whole lot.
Secondly, I would note that Panel begets
Applet and that JPanel begets AbstractColorChooserPanel, and I would use either of those as your precedents. In other words, use a more descriptive name (like Applet) or a class name ending in Panel. I can't find any example in the API of a Pane object begotten from the Panel or JPanel classes; however, you might if your class acts more like one of the classes ended in Pane, for example if you are deriving from Panel but your class will ultimately be a fancier form of ScrollPane.