🚀 go-pugleaf

> public class X extends Frame {
>
> // various
>
> public static void main(String[] args) {
>
> // what is this doing? (I mean syntactically)
> WindowListener l = new WindowAdapter() {
>    public void windowClosing(WindowEvent e) {
>        System.exit(0);
>    }
> };
>
> // etc
>
> }
This is called an inner class adapter (or anonymous adapter).
You can actually do it even more compact (as taken from JBuilder2 Helpfiles)

buttonControl1.addFocusListener(new java.awt.event.FocusAdapter() {
  public void focusGained(FocusEvent e) {
    buttonControl_focusGained(e);
  }
 }

 void buttonControl1_focusGained(FocusEvent e) {
  // your code to respond to event goes here
}

> I understand that WindowAdapter is an
> abstract class that implements WindowListener.
>
> It looks as though the block after the new operator
> redefines one of the WindowAdapter methods, as needed by the program.
This
> looks like very strange syntax to me. It should be something like:
>
> class MyWindowAdapter extends WindowAdapter {
>    public void windowClosing(WindowEvent e) {
>           System.exit(0);
>    }
> }
>
> And then:
>
> WindowListener l = new MyWindowAdapter();
>
Yes, you are right, but then you won't have access to all variables (only
public and package level).


--
Regards Twilex
==================
twilex@c2i.net