JApplet won't switch image??

Question

Hi everyone...
My JApplet was supposed to display a new image when the sign up button is pressed..
But it doesn't.. Here take a look at my source code!
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.applet.*;
public class JFrameApplet extends JApplet implements Runnable
private Thread th;
private Image icon;
Image background;
  public void init()
background = getImage(getCodeBase(), "background.gif");
    Container content = getContentPane();
    content.setLayout(new FlowLayout());
    JButton signUp = (new JButton("Sign Up"));
JButton logIn = (new JButton("Login"));
signUp.addActionListener(new ActionListener()
  public void actionPerformed(ActionEvent e)
   getIcon();
content.add(signUp);
content.add(logIn);
  private void getIcon()
  MediaTracker tracker = new MediaTracker(this);
  icon = getImage(getCodeBase(), "icon.png");
  tracker.addImage(icon, 1);
try
  tracker.waitForAll();
catch(Exception exception)
  System.out.println("Error displaying new image.");
  private void getImages()
  public void start()
th = new Thread(this);
th.start();
  public void destroy()
th.stop();
  public void run()
  public void stop()
th.stop();
  public void update(Graphics g)
  public void paint(Graphics g)
g.drawImage(background, 0, 0, this);
}

Answer 1

Wow thanks, the following code helped my out :)
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.applet.*;
public class JFrameApplet extends JApplet implements Runnable
private Thread th;
Image background, icon;
  public void init()
background = getImage(getCodeBase(), "background.gif");
    Container content = getContentPane();
    content.setLayout(new FlowLayout());
    JButton signUp = (new JButton("Sign Up"));
JButton logIn = (new JButton("Login"));
signUp.addActionListener(new ActionListener()
  public void actionPerformed(ActionEvent evt)
   icon = getImage(getCodeBase(), "icon.gif");
content.add(signUp);
content.add(logIn);
private void getImages()
public void start()
    th = new Thread(this);
th.start();
public void destroy()
    th.stop();
public void run()
public void stop()
    th.stop();
public void update(Graphics g)
public void paint(Graphics g)
    g.drawImage(background, 0, 0, this);
g.drawImage(icon, 0, 0, this);
}Here you are, 5 duke stars!