MY Midlet works with the emulator... but not in my Palm??

Question

I don t understand why can somebody help me?
I am actually manking some tests .. Here is he complete code of my midlet :
* MyMidlet.java
* Created on 23 f�vrier 2005, 10:50
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
* @author Crazyman
* @version
public class MyMidlet extends MIDlet implements CommandListener, ItemCommandListener, Runnable {
private static Display display;
private static Form FormButton,FormList;
private static List Menu;
private static Thread Th;
private static ChoiceGroup Drop,Check,Pop;
private static boolean StopFlag = false;
private static Command Exit,Main,Select,Start,Stop;
public MyMidlet() {
try
display = Display.getDisplay(this);
String[] elements = {"Button","List"}; //Menu items
Menu = new List("MENU", List.IMPLICIT,elements,null);
Exit = new Command("Exit", Command.EXIT, 1);
Select = new Command("",Command.ITEM,1);
Main = new Command("Main",Command.OK,1);
Start = new Command("Start",Command.ITEM,1);
Stop = new Command("Stop",Command.ITEM,1);
Ticker Tick = new Ticker("Ticker ki sert a rien");
Menu = new List("Menu", List.IMPLICIT, elements, null);
Menu.addCommand(Exit);
Menu.setTicker(Tick);
Menu.setCommandListener(this);
FormButton = new Form ("Button");
StringItem btStart = new StringItem("Start",null,Item.BUTTON);
StringItem btStop = new StringItem("Stop",null,Item.BUTTON);
btStart.setDefaultCommand(Start);
btStart.setItemCommandListener(this);
btStop.setDefaultCommand(Stop);
btStop.setItemCommandListener(this);
FormButton.addCommand(Exit);
FormButton.append(btStart);
FormButton.append(btStop);
FormButton.setCommandListener(this);
FormList = new Form("Listes");
String[] DropArray = {"Drop1","Drop2"};
Drop = new ChoiceGroup("DropList",Choice.EXCLUSIVE,DropArray,null);
String[] PopArray = {"Pop1","Pop2"};
Pop = new ChoiceGroup("PopList",Choice.POPUP,PopArray,null);
String[] CheckArray = {"Check1","Check2"};
Check = new ChoiceGroup("CheckList",Choice.MULTIPLE,CheckArray,null);
FormList.append(Drop);
FormList.append(Pop);
FormList.append(Check);
FormList.addCommand(Main);
FormList.addCommand(Exit);
FormList.setCommandListener(this);
catch( Exception e)
System.out.println(e);
public void startApp() {
display.setCurrent(Menu);
public void pauseApp() {
public void destroyApp(boolean unconditional) {
notifyDestroyed();
public void commandAction(javax.microedition.lcdui.Command cmd, javax.microedition.lcdui.Displayable disp) {
try
if (disp == Menu && cmd == List.SELECT_COMMAND)
String Form2Create = Menu.getString(Menu.getSelectedIndex());
String S = Form2Create;
Menu.append(S, null);
CreateForm(Form2Create);
if(cmd == Exit)
destroyApp(true);
if(cmd == Main)
display.setCurrent(Menu);
catch( Exception e)
System.out.println(e);
public void commandAction(javax.microedition.lcdui.Command cmd, javax.microedition.lcdui.Item item) {
if(cmd == Start)
Th = new Thread(this);
Th.start();
TextField T = new TextField("Started",null,5,TextField.ANY);
FormButton.append(T);
if(cmd == Stop)
StopFlag = true;
TextField T = new TextField("Stoped",null,6,TextField.ANY);
FormButton.append(T);
public void run() {
int v = 0;
while(StopFlag == false)
String S = ""+v;
TextField T = new TextField("",S,5,TextField.ANY);
FormButton.append(T);
display.setCurrent(FormButton);
v++;
public void CreateForm(String F)
try
if(F.equals("Button"))
FormButton = new Form ("Button");
StringItem btStart = new StringItem("Start",null,Item.BUTTON);
StringItem btStop = new StringItem("Stop",null,Item.BUTTON);
btStart.setDefaultCommand(Start);
btStart.setItemCommandListener(this);
btStop.setDefaultCommand(Stop);
btStop.setItemCommandListener(this);
FormButton.addCommand(Main);
FormButton.addCommand(Exit);
FormButton.append(btStart);
FormButton.append(btStop);
FormButton.setCommandListener(this);
display.setCurrent(FormButton);
if(F.equals("List"))
FormList = new Form("Listes");
String[] DropArray = {"Drop1","Drop2"};
Drop = new ChoiceGroup("DropList",Choice.EXCLUSIVE,DropArray,null);
String[] PopArray = {"Pop1","Pop2"};
Pop = new ChoiceGroup("PopList",Choice.POPUP,PopArray,null);
String[] CheckArray = {"Check1","Check2"};
Check = new ChoiceGroup("CheckList",Choice.MULTIPLE,CheckArray,null);
FormList.append(Drop);
FormList.append(Pop);
FormList.append(Check);
FormList.addCommand(Main);
FormList.addCommand(Exit);
FormList.setCommandListener(this);
display.setCurrent(FormList);
catch( Exception e)
System.out.println(e);
}

Answer 1

The Problem is bound with my StringItems i think because when i delete them and i juste display my "FormButton" without anything there are no problems.....
In my palm, the midlet get blocked when i press the button to open the "FormButton" in my menu..
Plz help me..
Thx