ok, seems I must have misunderstood you...sorry about that...

this is how I would normally handle closing..
method onCancel
{
this.setVsible(false);
this.dispose();
}
...

similarly you can call the dispose() or flush() or even setVisible(false) method on the click event for the cancel button. that way the popup should close.

you usually place disposer() and flush() codes on events such as windowclose,windowopen and etc....

if you wish to open a popup when you click on export, you can simply call yourpopupid.open()...

It could help if you try to go over your program and write a pseudocode and then browse over java tutorials to interpret your pseudocode into java codes....

With a little effort you can answer...

Try combining dispose() or exit() with the window...you could also pass a variable false to set the pop-ups visibility.

What is your code? You could also set your pop-up as listener for an close...

Greetings!

You could also try to search for the examples on google or the java2s.com, kodejava.com...

Happy coding,

Loken