Progress bar does not display

Question

Hello. I have a class which display a progreess bar progresssing when run from main. But same class when run from another class it does not display. When the progress is over then it displays.
The same prob i had with my splash. run from main everything alright. But from another class image in splash is not loaded. Do u have an answer?
progress bar class
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.*;
import java.sql.*;
import javax.swing.border.*;
public class progress extends JFrame
static final int MY_MINIMUM=0;
static final int MY_MAXIMUM=100;
JProgressBar pbar;
progress()
pbar = new JProgressBar();
pbar.setMinimum(MY_MINIMUM);
pbar.setMaximum(MY_MAXIMUM);
JLabel label =new JLabel("Timetable Generation in Process");
label.setFont(new Font("Garamond",Font.BOLD,21));
JTextField text=new JTextField();
// JPanel_Background mainpanel=new JPanel_Background();
JPanel mainpanel=new JPanel();
JPanel pan=new JPanel(new GridLayout(3,1,20,40));
JPanel pan1=new JPanel();
JPanel pan2=new JPanel();
JPanel pan3=new JPanel();
double value =pbar.getPercentComplete();
// text.setText(value);
pan2.setSize(100,20);
pan.setOpaque(false);
pan1.setOpaque(false);
pan2.setOpaque(false);
pan3.setOpaque(false);
pan1.add(label);
pan2.add(pbar);
// pan3.add(text);
pan.add(pan1);
pan.add(pan2);
pan.add(pan3);
mainpanel.add(pan);
getContentPane().add(mainpanel);
public void updateBar(int newValue)
pbar.setValue(newValue);
public static void main(String args[])
final progress m=new progress();
m.setSize(200,200);
m.setVisible(true);
     for (int i = MY_MINIMUM; i <= MY_MAXIMUM; i++)
     final int percent=i;
     try
     SwingUtilities.invokeLater(new Runnable() {
     public void run() {
     m.updateBar(percent);
     java.lang.Thread.sleep(100);
     catch (InterruptedException e)
now run from another class extending a JFrame
final progress m=new progress();
                              m.setSize(200,200);
                              m.show();
                                   for (int i = 0; i <= 100; i++)
                                   final int percent=i;
                                   try
                                   SwingUtilities.invokeLater(new Runnable() {
                                   public void run() {
                                   m.updateBar(percent);
                                   java.lang.Thread.sleep(100);
                                   catch (InterruptedException en)

Answer 1

Stay out of the swing event thread.
Read: http://java.sun.com/docs/books/tutorial/uiswing/overview/threads.html