Swing/AWT/SWT :: Radio Button Not Getting Displayed

For the following code.When I run it ,I am getting the image and Login written along with it , but not getting the preselected radio button

import javax.swing.*;
public class MyJFrameWithJRadioButton extends JFrame
{
JRadioButton rdButton;
public MyJFrameWithJRadioButton()
{
setTitle("This is a JFrame");
setBounds(0, 0, 200, 200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
rdButton =new JRadioButton("Login",new ImageIcon(ClassLoader.getSystemResource("Login.png")),true);
add(rdButton);
setVisible(true);

[code]....