Get selected JRadioButton

Complete source code below will show you, how to get selected JRadioButton.

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COMPLETE SOURCE CODE FOR : GetSelectedJRadioButton.java
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import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JOptionPane;

import java.awt.BorderLayout;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class GetSelectedJRadioButton implements ActionListener
{
//Create two radio button that will be put into a group
//Set start radio button selection to female
JRadioButton firstRadioButton=new JRadioButton("Female",true);
JRadioButton secondRadioButton=new JRadioButton("Male");

//Create a button with text ( What i select )
JButton button=new JButton("What i select");

//Create a window using JFrame with title ( Get selected JRadioButton )
JFrame frame=new JFrame("Get selected JRadioButton");

public GetSelectedJRadioButton()
{
 //Create a radio button group using ButtonGroup
 ButtonGroup bg=new ButtonGroup();

 //Add all radio button into created group
 bg.add(firstRadioButton);
 bg.add(secondRadioButton);

 //Set JFrame layout to border layout
 frame.setLayout(new BorderLayout());

 //Create a panel that will be put radio button into it
 JPanel panel=new JPanel();

 //Add all created radio button into panel
 panel.add(firstRadioButton);
 panel.add(secondRadioButton);

 //Add action listener to created button
 button.addActionListener(this);

 //Add panel and button into JFrame
 frame.add(panel,BorderLayout.CENTER);
 frame.add(button,BorderLayout.SOUTH);

 //Set default close operation for JFrame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 //Set JFrame size
 frame.setSize(300,150);

 //Make JFrame visible
 frame.setVisible(true);
}

   //Action for button
public void actionPerformed(ActionEvent event)
{
 if(event.getSource()==button)
 {
  if(firstRadioButton.isSelected())
  {
   JOptionPane.showMessageDialog(frame,"You select : "+firstRadioButton.getText());
  }
 
  else if(secondRadioButton.isSelected())
  {
   JOptionPane.showMessageDialog(frame,"You select : "+secondRadioButton.getText());
  }
 }
}

public static void main(String[]args)
{
 GetSelectedJRadioButton gsjrb=new GetSelectedJRadioButton();
}
}

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JUST COMPILE AND EXECUTE IT
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