Netbeans - Sr.

Hola. Estoy realizando una aplicacion mobile en Netbeans con J2ME. El asunto es que tengo un Choicegroup donde tengo 3 choice element y dependiendo de la eleccion debe aparecer en un textfield una palabra. El codigo es el siguiente:

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package hello;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

/**
* @author bladimir
*/
public class HelloMIDlet extends MIDlet implements CommandListener {

private boolean midletPaused = false;

//<editor-fold defaultstate="collapsed" desc=" Generated Fields ">//GEN-BEGIN:|fields|0|
private Command exitCommand;
private Form form;
private ChoiceGroup choiceGroup;
private TextField textField;

//</editor-fold>//GEN-END:|fields|0|

/**
* The HelloMIDlet constructor.
*/
public HelloMIDlet() {
}

//<editor-fold defaultstate="collapsed" desc=" Generated Methods ">//GEN-BEGIN:|methods|0|
//</editor-fold>//GEN-END:|methods|0|

//<editor-fold defaultstate="collapsed" desc=" Generated Method: initialize ">//GEN-BEGIN:|0-initialize|0|0-preInitialize
/**
* Initilizes the application.
* It is called only once when the MIDlet is started. The method is called before the <code>startMIDlet</code> method.
*/
private void initialize() {//GEN-END:|0-initialize|0|0-preInitialize
// write pre-initialize user code here
//GEN-LINE:|0-initialize|1|0-postInitialize
// write post-initialize user code here
}//GEN-BEGIN:|0-initialize|2|
//</editor-fold>//GEN-END:|0-initialize|2|

//<editor-fold defaultstate="collapsed" desc=" Generated Method: startMIDlet ">//GEN-BEGIN:|3-startMIDlet|0|3-preAction
/**
* Performs an action assigned to the Mobile Device - MIDlet Started point.
*/
public void startMIDlet() {//GEN-END:|3-startMIDlet|0|3-preAction
// write pre-action user code here
switchDisplayable(null, getForm());//GEN-LINE:|3-startMIDlet|1|3-postAction
// write post-action user code here
}//GEN-BEGIN:|3-startMIDlet|2|
//</editor-fold>//GEN-END:|3-startMIDlet|2|

//<editor-fold defaultstate="collapsed" desc=" Generated Method: resumeMIDlet ">//GEN-BEGIN:|4-resumeMIDlet|0|4-preAction
/**
* Performs an action assigned to the Mobile Device - MIDlet Resumed point.
*/
public void resumeMIDlet() {//GEN-END:|4-resumeMIDlet|0|4-preAction
// write pre-action user code here
//GEN-LINE:|4-resumeMIDlet|1|4-postAction
// write post-action user code here
}//GEN-BEGIN:|4-resumeMIDlet|2|
//</editor-fold>//GEN-END:|4-resumeMIDlet|2|

//<editor-fold defaultstate="collapsed" desc=" Generated Method: switchDisplayable ">//GEN-BEGIN:|5-switchDisplayable|0|5-preSwitch
/**
* Switches a current displayable in a display. The <code>display</code> instance is taken from <code>getDisplay</code> method. This method is used by all actions in the design for switching displayable.
* @param alert the Alert which is temporarily set to the display; if <code>null</code>, then <code>nextDisplayable</code> is set immediately
* @param nextDisplayable the Displayable to be set
*/
public void switchDisplayable(Alert alert, Displayable nextDisplayable) {//GEN-END:|5-switchDisplayable|0|5-preSwitch
// write pre-switch user code here
Display display = getDisplay();//GEN-BEGIN:|5-switchDisplayable|1|5-postSwitch
if (alert == null) {
display.setCurrent(nextDisplayable);
} else {
display.setCurrent(alert, nextDisplayable);
}//GEN-END:|5-switchDisplayable|1|5-postSwitch
// write post-switch user code here
}//GEN-BEGIN:|5-switchDisplayable|2|
//</editor-fold>//GEN-END:|5-switchDisplayable|2|

//<editor-fold defaultstate="collapsed" desc=" Generated Method: commandAction for Displayables ">//GEN-BEGIN:|7-commandAction|0|7-preCommandAction
/**
* Called by a system to indicated that a command has been invoked on a particular displayable.
* @param command the Command that was invoked
* @param displayable the Displayable where the command was invoked
*/
public void commandAction(Command command, Displayable displayable) {//GEN-END:|7-commandAction|0|7-preCommandAction
// write pre-action user code here
if (displayable == form) {//GEN-BEGIN:|7-commandAction|1|19-preAction
if (command == exitCommand) {//GEN-END:|7-commandAction|1|19-preAction
// write pre-action user code here
exitMIDlet();//GEN-LINE:|7-commandAction|2|19-postAction
// write post-action user code here
}//GEN-BEGIN:|7-commandAction|3|7-postCommandAction
}//GEN-END:|7-commandAction|3|7-postCommandAction
// write post-action user code here
}//GEN-BEGIN:|7-commandAction|4|
//</editor-fold>//GEN-END:|7-commandAction|4|

//<editor-fold defaultstate="collapsed" desc=" Generated Getter: exitCommand ">//GEN-BEGIN:|18-getter|0|18-preInit
/**
* Returns an initiliazed instance of exitCommand component.
* @return the initialized component instance
*/
public Command getExitCommand() {
if (exitCommand == null) {//GEN-END:|18-getter|0|18-preInit
// write pre-init user code here
exitCommand = new Command("Exit", Command.EXIT, 0);//GEN-LINE:|18-getter|1|18-postInit
// write post-init user code here
}//GEN-BEGIN:|18-getter|2|
return exitCommand;
}
//</editor-fold>//GEN-END:|18-getter|2|

//<editor-fold defaultstate="collapsed" desc=" Generated Getter: form ">//GEN-BEGIN:|14-getter|0|14-preInit
/**
* Returns an initiliazed instance of form component.
* @return the initialized component instance
*/
public Form getForm() {
if (form == null) {//GEN-END:|14-getter|0|14-preInit
// write pre-init user code here
form = new Form("Welcome", new Item[] { getChoiceGroup(), getTextField() });//GEN-BEGIN:|14-getter|1|14-postInit
form.addCommand(getExitCommand());
form.setCommandListener(this);//GEN-END:|14-getter|1|14-postInit
// write post-init user code here
}//GEN-BEGIN:|14-getter|2|
return form;
}
//</editor-fold>//GEN-END:|14-getter|2|


//<editor-fold defaultstate="collapsed" desc=" Generated Getter: choiceGroup ">
/**
* Returns an initiliazed instance of choiceGroup component.
* @return the initialized component instance
*/
public TextField getTextField() {
if (textField == null) {
// write pre-init user code here
textField = new TextField("Conducta", null, 32, TextField.ANY);//GEN-LINE:|26-getter|1|26-postInit
// write post-init user code here
}
return textField;
}

public ChoiceGroup getChoiceGroup() {
if (choiceGroup == null) {
// write pre-init user code here
choiceGroup = new ChoiceGroup("choiceGroup", Choice.EXCLUSIVE);//GEN-BEGIN:|22-getter|1|22-postInit
choiceGroup.append("Choice Element 1", null);
choiceGroup.append("Choice Element 2", null);
choiceGroup.append("Choice Element 3", null);
choiceGroup.setSelectedFlags(new boolean[] { false, false, false });//GEN-END:|22-getter|1|22-postInit
// write post-init user code here
if(choiceGroup.getSelectedIndex()==1){
textField.setText("Angel");
}
}//GEN-BEGIN:|22-getter|2|

return choiceGroup;
}
//</editor-fold>//GEN-END:|22-getter|2|
//GEN-LINE:|22-getter|1|
//<editor-fold defaultstate="collapsed" desc=" Generated Getter: textField ">//GEN-LINE:|22-getter|0|
/**
* Returns an initiliazed instance of textField component.
* @return the initialized component instance
*/

//</editor-fold>

/**
* Returns a display instance.
* @return the display instance.
*/
public Display getDisplay () {
return Display.getDisplay(this);
}

/**
* Exits MIDlet.
*/
public void exitMIDlet() {
switchDisplayable (null, null);
destroyApp(true);
notifyDestroyed();
}

/**
* Called when MIDlet is started.
* Checks whether the MIDlet have been already started and initialize/starts or resumes the MIDlet.
*/
public void startApp() {
if (midletPaused) {
resumeMIDlet ();
} else {
initialize ();
startMIDlet ();
}
midletPaused = false;
}

/**
* Called when MIDlet is paused.
*/
public void pauseApp() {
midletPaused = true;
}

/**
* Called to signal the MIDlet to terminate.
* @param unconditional if true, then the MIDlet has to be unconditionally terminated and all resources has to be released.
*/
public void destroyApp(boolean unconditional) {
}

}

Gracias de antemano.