JProgressBar - support for "indeterminate" display

This functionality can be implemented by adding API to the
existing JProgressBar implementation. When the programmer
specifies that the task has an indeterminate duration then
the progress bar, instead of displaying its usual left-to-
right or bottom-to-top animation, would display continuous
animation such as a swirling barber pole. The intent would
be to show the user that the program is doing something,
even though the actual progress of the task can't be
determined until it either finishes or fails.
kathleen.walrath@Eng 2000-03-16