/media/sda-magnetic/david/Dokumente-15/fernuni-hagen/cs-i-ii/old-cs-2-03/java-new/2021-01-28/ButtenTestA.java

import java.awt.*;
import java.awt.event.*;

public class ButtonTestA {
    public static void main (String [] args) {
        Frame f = new Frame ();
        Button b = new Button ();
        
        f.setSize (400, 400);
        f.setLocation (100, 100);
        f.setVisible (true);
        f.add (b);
        
        ActionListnr al = new ActionListnr ();
        b.addActionsListener (al);
    }
    
    public static class ActionListnr implements ActionListener {
        ActionListnr () {}
        
        @Override 
        public void actionPerformed (ActionEvent e) {
            System.exit (0);
        }
    }

}