How do i write a listener for when a JInternalFrame gains focus?

[johnsonk]

I tried the following :

public class MyUI extends JInternalFrame{
    ...... 

  public MyUI (MyUIController controller,String title) {
          addInternalFrameListener(new InternalFrameAdapter(){

                @Override
                public void internalFrameActivated(ActionEvent e) {
                    manageAddCategory();
                }
            });
    .....
}

However it wouldn't compile.

Any help appreciated

[Stu_328]

Whats the error on compile?

And don't put stuff like adding listeners in the constructor - its bad practice.

[johnsonk]

Was just replying and I managed to fix it, I needed to import

javax.swing.event.InternalFrameAdapter;

even though I had imported
javax.swing.event.*;

[johnsonk]

Oh wait I imported awt.event.* , my bad

Thanks for your reply though