Question

Possible Duplicate:
JDialog Stops execution of parent JFrame

I have to JFrame and it has undecorated and has only an image of progress bar in it…but when i want send request to the server i want it to be show progress bar and it is not showing it instead but my window is loaded….i have tried jDialog but it is stopping execution of my code..

here is my code

private void LoginBtnActionPerformed(java.awt.event.ActionEvent evt) {
    ProgressBar pb = new ProgressBar();
    pb.setVisible(true);
    List<BasicNameValuePair> postPairs = new ArrayList<BasicNameValuePair>();
    AsyncService asyncService = new AsyncService();

    postPairs.add(new BasicNameValuePair("PATH","authenticateUser.idoc"));
        postPairs.add(new BasicNameValuePair("user_email",email));
        postPairs.add(new BasicNameValuePair("user_password",password));


        JSONArray jArray = asyncService.sendRequest(postPairs);
        pb.setVisible(true);
}

I have nothing in my progress bar frame except an gif animation image and a Label…
EDIT 1
*/

  class WorkerProgressBar extends SwingWorker<Integer, Integer>
  {
    private JFrame pb = new JFrame();
    JDialog dialog = new JDialog();
     JPanel panel = new JPanel();
     JLabel label = new JLabel();
     public WorkerProgressBar(){
             panel = new JPanel();
                panel.setBackground(new Color(114,114,114));
                JLabel imageLabel = new JLabel(new ImageIcon(getClass().getResource("/icons/progress_bar.gif")));
                imageLabel.setBorder(BorderFactory.createLineBorder(Color.black));
                panel.add(imageLabel);
                dialog.getContentPane().add(panel,BorderLayout.CENTER);

                dialog.pack();
                dialog.setLocationRelativeTo(null);
     }
     protected Integer doInBackground() throws Exception
 {
        dialog.setVisible(true);
        return 0;
     }
     protected void done()
{
    try
    {
        dialog.setVisible(false);
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
}   

Answer 1

You should use a JDialog if the window is to be above another Swing top level window, but must be sure that all code to be run is called before setting a modal dialog a visible. Key though is that you should be running long-running tasks on a background thread such as that provided by SwingWorker. There are many examples of this on this site as yours is a question that has been asked many times here.