JProgressBar,how to update in file transfer?

Question

Hi ..
I have the following copy code that uses java nio package, how to update jProgressBar to indicate movement in file transfer?
I needn't use progress monitor...
    public static void copyFile(File sourceFile, File destFile) throws IOException {
if(!destFile.exists()) {
  destFile.createNewFile();
FileChannel source = null;
FileChannel destination = null;
try {
  source = new FileInputStream(sourceFile).getChannel();
  destination = new FileOutputStream(destFile).getChannel();
  destination.transferFrom(source, 0, source.size());
//JOptionPane.showMessageDialog(null, destination.position());
finally {
  if(source != null) {
   source.close();
  if(destination != null) {
   destination.close();
    }Thanks..
Feras

Answer 1

Inorder to update your progress bar, you have to have it in a different thread and update it--you also have to do the copy in segmented fashion... if you have one stream running continuously, then you cannot update anything.