ADATTARE L' ESEMPIO
class Terminator implements WindowListener {
public void windowClosed(WindowEvent e){}
public void windowClosing(WindowEvent e){ System.exit(0);}
public void windowOpened(WindowEvent e){}
public void windowIconified(WindowEvent e){}
public void windowDeiconified(WindowEvent e){}
public void windowActivated(WindowEvent e){}
public void windowDeactivated(WindowEvent e){}
ora, chiudendo la finestra si esce dall'applicazione