of an existing window.
<p>
The example program uses a Panel to group the label and the text area,
another Panel to group them with a canvas,
and a third Panel to group
the text field, button, checkbox, and pop-up list of choices.
All these Panels are grouped by the Applet object,
since the Applet class is a subclass of Panel.
<p>
The example program uses a Frame
to hold the Menu and List.
(Frames create normal, full-fledged windows,
as opposed to the windows that Dialogs create,
which are dependent on Frame