Re: Do I need Threads for this?
Oliver Wong wrote:
<DRS.Usenet@sengsational.com> wrote in message
news:1165332490.523714.256380@79g2000cws.googlegroups.com...
nospam@invalid.invalid wrote:
I've got a method that copies files from one place to another. Each time
the
file copies over it takes roughly 10 seconds per file (depending on how
large the file is).
In the meantime, I need my JPanel label to update with the current number
of
files copied over so far.
Yes, you need threads, but it's not that hard. You make a class that
implements Runnable or extends Thread. Then you can do all ten files
at once, if you choose to!
It's not super hard, but it's not super easy either. This tutorial
should get you started:
http://java.sun.com/docs/books/tutorial/essential/concurrency/
- Oliver
I was going to recommend the tutorial on Swing, which used to include very good
examples on how to perform tasks in threads, and how to use JProgressBar to
monitor progress. But this has now been replaced by a pretty useless one which
is completely dependent on Java 6 and the new SwingWorker. It seems that Sun no
longer consider that there is any other way to use threads in Swing...
If anyone knows where the old "Creating a GUI with JFC/Swing" can be found, I'd
be grateful for a link, because I used that tutorial extensively.
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555