Develop a program using ActionListener in Java When User Click on Red Button it should change frame color to Red

When User Click on Red,Green,Yellow Button it should change frame color to Red,Green,Yellow

ActionListener in Java

import java.awt.*;
import java.awt.event.*;
public class C1 extends Frame implements ActionListener
{
Button b1,b2,b3;
C1()
{
b1=new Button("Red");
b1.setBounds(100,50,80,40);
add(b1);
b2=new Button("Green");
b2.setBounds(100,100,80,40);
add(b2);
b3=new Button("Yellow");
b3.setBounds(100,150,80,40);
add(b3);
setSize(500,500);
setLayout(null);
setVisible(true);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==b1)
{
setBackground(Color.RED);
}
if(e.getSource()==b2)
{
setBackground(Color.GREEN);
}
if(e.getSource()==b3)
{
setBackground(Color.YELLOW);
}
}
public static void main(String a[])
{
new C1();
}
}



Output: