Query on zipping of file??

[Bikash Paul]

Hi all friends,
Iam zipping file through my swing interface and showing the progress of zipping on ProgressMonitor.Iam selecting file by opening FileDialog box on the action event of button,Now my problem is when iam selecting file from my hard disk through FileDialog box for zip, my whole swing interface and ProgressMonitor going to disable and after completion of zipping both are enable.Can any one plz guide me how I can slove this problem.Below r my codes.

//Button of action event
button.addActionListener(new ActionListener()
 {
public void actionPerformed(ActionEvent e)
      {
FileDialog fileDialog = new FileDialog(Mac_Zip1.this );
fileDialog.setMode(FileDialog.LOAD);
fileDialog.show();
if (fileDialog.getFile() == null)
         {
   return;
 }
f = new File( fileDialog.getDirectory(),fileDialog.getFile());                 
String aa1=fileDialog.getDirectory();
String aa2=fileDialog.getFile();
int o=aa2.indexOf(".");
String aa3=aa2.substring(0, o);               
String a=aa1+aa2;                 
try {
     File myDir =new File(aa1);
ZipOutputStream outStream = new ZipOutputStream (new FileOutputStream("d:\\DTMS\\Input\\"+aa3+".zip"));
outStream.setMethod(ZipOutputStream.DEFLATED);
outStream.setLevel(9);
processFile(myDir,null, aa2 ,outStream);
JOptionPane.showMessageDialog( null, "ZIPING COMPLETE" );                    
outStream.setLevel(9);
}catch(Exception h){ h.printStackTrace();}
 }
});
//Method of zipping of file
public static void processFile(File myDir, Component parentComponent,String fileName,ZipOutputStream out)
{
try
 {
  File f = new File(myDir, fileName);
  int length=(int)f.length();
 ProgressMonitor monitor = new ProgressMonitor(parentComponent,"Unpacking " + f.getName() + "...", "", 0, length);
                        monitor.setMillisToDecideToPopup(0);
monitor.setMillisToPopup(0);
FileInputStream in = new FileInputStream(f);
// Add ZIP entry to output stream.
ZipEntry e1 = new ZipEntry(fileName);
out.putNextEntry(e1);                        
monitor.setNote(e1.getName());
byte[] buf = new byte[16384];
int len;
int count=0;
while ((len = in.read(buf)) > 0)
{
  out.write(buf, 0, len);
  count += len;                        
monitor.setProgress(count);
}                        
out.closeEntry();
in.close();
}
catch (Exception e){System.out.println("Error ::" + e);}
}

Regards
Bikash
[ July 03, 2003: Message edited by: Bikash Paul ]
[ July 03, 2003: Message edited by: Carl Trusiak ]

[Stan James]

Look into running your zip process on another thread. You'd have to move the code to a new class that is runnable (better encapsulation is a free benefit) and start it. Then your zip class can call SwingUtilities.invokeLater() or invokeAndWait() with progress updates. These accept yet another runnable object, and run the object back on the original Swing thread.
All this allows the Swing thread to accept mouse gestures and keystrokes or update visual goodies like your progress bar while your zip is running.
Hope that helps!

[Bikash Paul]

Hi,
Thanks for ur suggestion.
Thanks
Bikash