Getting my program to send message to server when you click X

Question

I have a client application, it has the minimize, expand, close buttons at the top right cornor like most applications, i have tried using windowlistener but that doesnt work, i want whenever a user clicks the X (close) to send a message to my server saying "bye" and then close the socket connection with the server, thats easy, i just cant figure out how to listen for when a user clicks that X button.
I can post my code if i need to

Answer 1

I think I know what your problem is.... assuming that you aren't making an applet, you have to set you close operation to do nothing and then inside of the window closing event exit the programm, so....
MyGui myGui = new MyGui();
myGui.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
/*and then your windowClosing method should look like this*/
addWindowListener(new WindowAdapter(){
     public void windowClosing(WindowEvent e){
          out.println("bye");
                System.exit(0);
});