LWUIT: Radio Button

import javax.microedition.midlet.*;
import com.sun.lwuit.*;
import com.sun.lwuit.events.*;

public class Hello_LWUIT extends MIDlet implements ActionListener {
 public void startApp() {
  Display.init(this);
  Form f = new Form("Hello, MIDlet in LWUIT!");
  f.show();
  Command exitCommand = new Command("Exit");
  f.addCommand(exitCommand);
  f.setCommandListener(this);

                RadioButton radioButton_1 = new RadioButton("Radio Button 1");
                RadioButton radioButton_2 = new RadioButton("Radio Button 2");
                RadioButton radioButton_3 = new RadioButton("Radio Button 3");

                f.addComponent(radioButton_1);
                f.addComponent(radioButton_2);
                f.addComponent(radioButton_3);

 }
 public void pauseApp() {}
 public void destroyApp(boolean unconditional) {}
 public void actionPerformed(ActionEvent ae) {
  notifyDestroyed();
 }
}