Java Applet - Change Background Color using Button

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

public class colorbutt extends Applet
{
Label l;
TextField tf; 
Button b1,b2;

public void init()
{
b1 = new Button("Color");
b2 = new Button("No Color");

add(b1); add(b2);

b1.addActionListener(new s());
b2.addActionListener(new s());
}

class s implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==b1)
{
setBackground(Color.red);
}

if(e.getSource()==b2)
{
setBackground(Color.white);
}
}
}
}

/* <applet code = "colorbutt.class" height = 300 width = 300>
</applet> */