Window Problem

[Ajit Kumar]

hi Guys,
I have the following code for window closing event
--------
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int exitApp= JOptionPane.showConfirmDialog(null,
"Do you really wish to exit the application", "Please Confirm", JOptionPane.YES_NO_OPTION);
if (exitApp==JOptionPane.YES_OPTION){
System.exit(0);
}
}
});
---------
When i am closing the window, the message is getting displayed. If i choose NO for closing the window is not remaining. It is just disappearing. I am sure it is not closing.
How do i make sure that, the window remains there, when i choose the NO option for the confirmation message???
any suggestions willbe greatly appreciated.

thanks in advance.