Simple Delegation program (1)

import java.awt.Button;
import java.awt.Label;
import java.awt.event.ActionListener;

public class DelegateDemo extends Frame {
    public static void main(String argv[]) {
        new SimpleEvent().setVisible(true);
    }

    public DelegateDemo() {
        // create the GUI objects
        Button left = new Button("Left");
        Button right = new Button("Right");
        Label label = new Label();

        // set their geometry
        add(left, "West");
        add(right, "East");
        add(label, "Center");
        pack();