Progress bar on Applet using swing

Question

Not sure if this is Swing related or applet related, so I'll post it here... :-)
Long work should be done on a Worker thread an not inside the Swing Dispacher thread .
So normally I create a Runnable object that calls something like doWork(), and pass the runnable object as a parameter to the Sing utilities invokelater() function.
My question is inside the worker thread how to update the GUI, in this case the progress bar?
Can I just call from inside doWork() with no problems the progressbar.setValue(X)?
Do I need to create another thread and use it too update the UI?
Is something like this valid ?
public void doWork() {
// work work work
progressbar.setValue(5);
//more work
progressbar.setValue(15);
// and so on
Thanks for the help!

Answer 1

Not sure if this is Swing related or applet related,
so I'll post it here... :-)It's definitely Swing related.
Long work should be done on a Worker thread an not
inside the Swing Dispacher thread . This is true.
So normally I create a Runnable object that calls
something like doWork(), and pass the runnable object
as a parameter to the Sing utilities invokelater()
function.This does not start a worker thread but rather schedules your Runnable object to be run on the EDT.
My question is inside the worker thread how to update
the GUI, in this case the progress bar?SwingUtilities or EventQueue have invokeLater and invokeAndWait specifically for this purpose.
Can I just call from inside doWork() with no problems
the progressbar.setValue(X)?
Do I need to create another thread and use it too
update the UI?No. Here's where you could use invokeLater.
Is something like this valid ?
public void doWork() {
// work work work
rogressbar.setValue(5);
//more work
progressbar.setValue(15);
// and so onNo.
>
Thanks for the help!Like pete has pointed out, this seems to be a job for SwingWorker.