import java.awt.event.* ;
import javax.swing.* ;

class TerminationListener implements WindowListener {
    public void windowActivated(WindowEvent e) {}
    public void windowClosed(WindowEvent e) {}
    public void windowClosing(WindowEvent e) {
        System.exit(0) ;
    }
    public void windowDeactivated(WindowEvent e) {}
    public void windowDeiconified(WindowEvent e) {}
    public void windowIconified(WindowEvent e) {}
    public void windowOpened(WindowEvent e) {}
}

class SimpleFrame extends JFrame {
    public SimpleFrame() {
        setTitle("SimpleFrame") ;
        setSize(450, 300) ;

        addWindowListener(new TerminationListener()) ;
    }
}

public class TerminationTest {
    public static void main(String [] args) {
        
        JFrame frame = new SimpleFrame() ;

        frame.show() ;
    }
}