/*
 * 1.1 version.
 */

import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.applet.Applet;

public class ButtonDemo extends Applet
                        implements ActionListener {

Button b1, b2, b3;
static final String DISABLE = "disable";
static final String ENABLE = "enable";

    public void init() {
        b1 = new Button();
        b1.setLabel("Disable middle button");
	b1.setActionCommand(DISABLE);

        b2 = new Button("Middle button");

        b3 = new Button("Enable middle button");
        b3.setEnabled(false);
	b3.setActionCommand(ENABLE);

	//Listen for actions on buttons 1 and 3.
	b1.addActionListener(this);
	b3.addActionListener(this);

        //Add Components to the Applet, using the default FlowLayout. 
        add(b1);
        add(b2);
        add(b3);
    }

    public void actionPerformed(ActionEvent e) {
        String command = e.getActionCommand();
         
        if (command == DISABLE) { //They clicked "Disable middle button"
            b2.setEnabled(false);
            b1.setEnabled(false);
            b3.setEnabled(true);
        } else { //They clicked "Enable middle button"
            b2.setEnabled(true);
            b1.setEnabled(true);
            b3.setEnabled(false);
        }
    }
}