Applet - Creating new objects from a Button Listener

Hello everyone, I'm attempting to create JComponents from when a
button is clicked. However I'm assuming I'm missing something? (Or
it's not possible)

This is some quick prototype code which shows my intentions.

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

public class myApplet extends Applet implements ActionListener{

    private JPanel buttonPanel;
    private HashMap<String,testButton> buttons;

    private testButton myButton, secondButton, thirdButton;

    public void init(){
        buttonPanel = new JPanel();
        buttons = new HashMap<String,testButton>();
        buttons.put(String.valueOf(buttons.size()),new testButton());
        buttonPanel.add(buttons.get(String.valueOf(buttons.size()-1)));
        add(buttonPanel);
    }//end init

    public void start(){
        System.out.println("START");
    }

    public void actionPerformed(ActionEvent event) {
        System.out.println("Action");
    }

private class testButton extends JButton implements ActionListener{

    public testButton(){
        setText("Button "+buttons.size());
        addActionListener(this);
    }

    public void actionPerformed(ActionEvent event) {
        System.out.println("Adding New Button");
        buttons.put(String.valueOf(buttons.size()),new testButton());
        buttonPanel.add(buttons.get(String.valueOf(buttons.size()-1)));
    }

}

}//end myApplet

Example here: http://www.theneb.co.uk/applet-test/test.html

Cheers