Splash Screen Msg not showing immediately??

Question

Hi
A splash screen with a msg is displayed after the edited
cell values of a JTable are being sent to the database
for updation,till the database responds with a msg of
success or failure.
This is to let the general user know that an updation is
in progress.
MY PROBLEM IS
Only the splash window with a blue background is displayed
with no msg in it.Only after the database displayes the
msg does the splash screen msg appear.
MY CODE is
public void setValueAt(Object new_value,int row,int col)
strf[row][col] = new_value.toString();
((AbstractTableModel)th.getModel()).fireTableCellUpdated(row,col);
int selec = JOptionPane.showConfirmDialog(null,"Save
changes " ,"Table Name",
JOptionPane.YES_NO_OPTION);
if(selec == 0) // YES OPTION
// Here only a blue window is displayed with no msg in it?????
SplashWindow sw = new SplashWindow("Please Wait" , null );
try
{  // Call a file that commits the changes to the database..
new set_di_details(param1,param2,.....);
catch(java.sql.SQLException)
sw.dispose(); // Dispose the splash screen.
else if( selec == 1) // NO OPTION
// Do not commit
MY SPLASH SCREEN CODE IS
import javax.swing.*;
import java.awt.*;
public class SplashWindow extends JWindow
public SplashWindow(String msg, Frame f)
super(f);
JLabel l = new JLabel(new String(msg));
l.setFont(new Font("Courier",Font.ITALIC,16));
getContentPane().add(l, BorderLayout.CENTER);
pack();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension labelSize = l.getPreferredSize();
setLocation(screenSize.width/2-(labelSize.width/2),screenSize.height/2-(labelSize.height/2));
setVisible(true);
public static void main(String args[])
SplashWindow sw = new SplashWindow(" Set is applied... ",null);
}

Answer 1

You need to read this section from the Swing tutorial on "Threads and Swing":
http://java.sun.com/docs/books/tutorial/uiswing/mini/threads.html
Basically, the Database access it being done using the same thread as the GUI would use to paint the splash screen, so the screen can't be repainted until the database access is finished.
Solution, the database access need to run in a separate thread.