Radio Swing Eclipse in Java multiplication and add

Example: Radio multiplication and add Eclipse in Java

package swing;

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;

import javax.swing.AbstractButton;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import java.awt.Font;

public class swingapp {

 private JFrame frame;
 private JTextField textFielda;
 private JTextField textFieldb;
 private JTextField textFieldc;
 private final ButtonGroup buttonGroup = new ButtonGroup();

 /**
  * Launch the application.
  */
 public static void main(String[] args) {
  EventQueue.invokeLater(new Runnable() {
   public void run() {
    try {
     swingapp window = new swingapp();
     window.frame.setVisible(true);
    } catch (Exception e) {
     e.printStackTrace();
    }
   }
  });
 }

 /**
  * Create the application.
  */
 public swingapp() {
  initialize();
 }

 /**
  * Initialize the contents of the frame.
  */
 private void initialize() {
  frame = new JFrame();
  frame.setBounds(100, 100, 258, 173);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.getContentPane().setLayout(null);
  
  JRadioButton rdbtnAdd = new JRadioButton("ADD");
  buttonGroup.add(rdbtnAdd);
  rdbtnAdd.setBounds(18, 7, 75, 23);
  frame.getContentPane().add(rdbtnAdd);
  
  JRadioButton rdbtnMutis = new JRadioButton("Multi");
  buttonGroup.add(rdbtnMutis);
  rdbtnMutis.setBounds(18, 44, 75, 23);
  frame.getContentPane().add(rdbtnMutis);
  
  JButton btnGo = new JButton("Go");
  btnGo.addActionListener(new ActionListener() {


   public void actionPerformed(ActionEvent e) {



    Enumeration<AbstractButton> bg = buttonGroup.getElements();
    while(bg.hasMoreElements()){
     JRadioButton jrd = (JRadioButton) bg.nextElement();
     int num1, num2, ans;
     num1 = Integer.parseInt(textFielda.getText());
     num2 = Integer.parseInt(textFieldb.getText());
     
     if(jrd.isSelected()){
      if(jrd == rdbtnAdd){
      ans =num1+num2;
      textFieldc.setText(Integer.toString(ans));
      }else{
      ans =num1*num2;
      textFieldc.setText(Integer.toString(ans));
      }
     }
    }
   }
  });
  btnGo.setBounds(18, 78, 59, 23);
  frame.getContentPane().add(btnGo);
  
  textFielda = new JTextField();
  textFielda.setBounds(99, 8, 86, 20);
  frame.getContentPane().add(textFielda);
  textFielda.setColumns(10);
  
  textFieldb = new JTextField();
  textFieldb.setBounds(99, 45, 86, 20);
  frame.getContentPane().add(textFieldb);
  textFieldb.setColumns(10);
  
  textFieldc = new JTextField();
  textFieldc.setBounds(99, 79, 86, 20);
  frame.getContentPane().add(textFieldc);
  textFieldc.setColumns(10);
  
  JLabel lblA = new JLabel("a");
  lblA.setBounds(192, 11, 46, 14);
  frame.getContentPane().add(lblA);
  
  JLabel lblB = new JLabel("b");
  lblB.setBounds(192, 48, 46, 14);
  frame.getContentPane().add(lblB);
  
  JLabel lblC = new JLabel("c");
  lblC.setBounds(192, 82, 46, 14);
  frame.getContentPane().add(lblC);
  
  JLabel lblDesignByMr = new JLabel("Design By Mr.24!");
  lblDesignByMr.setFont(new Font("Mistral", Font.PLAIN, 16));
  lblDesignByMr.setBounds(99, 110, 109, 14);
  frame.getContentPane().add(lblDesignByMr);
 }
}