Help with j2me

From: Piotre Ugrumov (aumulone_at_tin.it)
Date: 08/29/04 

Date: Sun, 29 Aug 2004 16:25:05 GMT

Hello I have a problem with j2me.

I have written this class(see later) that it run without problmes. But I
have a question. How can I add a command to a ChoiceGroup? I have add a
command to the form that contains the CoiceGroup, but how can I add a commad
directly to the ChoiceGroup?

Another question. I have a jar file with various classes. How can I import
these classes with the j2me wirless toolkit?
Thanks.

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

public class Secondo extends MIDlet implements CommandListener
{
 private int a;
 private Command exitCommand, cmrich, cmBack, sel, guid;
 private String stanze[] = {"0=Ingresso", "1=StanzaA", "2=StanzaB",
"3=StanzaC",
          "4=StanzaD", "5=StanzaE", "6=StanzaF", "7=StanzaG", "8=Uscita"};
 private Display display;
 private Form screen, scelta;
 private TextField richiesto = new TextField("Percorso richiesto", "", 20,
TextField.ANY);
 private TextBox guidato = new TextBox("Prova", "Inserisci dati", 25, 0);
 private ChoiceGroup dove = new ChoiceGroup("Scegli", Choice.EXCLUSIVE,
stanze, null);

 public Secondo()
 {

  display = Display.getDisplay(this);

  exitCommand = new Command("Uscita", Command.EXIT, 1);
  cmrich = new Command("Dove vuoi andare?", Command.SCREEN, 2);
        cmBack = new Command("Indietro", Command.BACK, 1);
  sel = new Command("Seleziona", Command.SCREEN, 2);
  guid = new Command("Percorso guidato", Command.SCREEN, 2);

  StringItem strItem = new StringItem(" ","Benvenuto!");

  screen = new Form("Agente Cellulare");
  screen.append(strItem);
  screen.append(richiesto);
  screen.addCommand(exitCommand);
  screen.addCommand(cmrich);
  screen.addCommand(guid);
  screen.setCommandListener(this);

  guidato.addCommand(cmBack);
  guidato.setCommandListener(this);

  scelta = new Form("Dove vuoi andare?");
  scelta.append(dove);
  scelta.addCommand(cmBack);
  scelta.addCommand(sel);
  scelta.setCommandListener(this);

 }

 public void startApp() throws MIDletStateChangeException
 {
  display.setCurrent(screen);
 }

 public void pauseApp()
 {
 }

 public void destroyApp(boolean unconditional)
 {
 }

 public void commandAction (Command c, Displayable s)
 {
  if(c==exitCommand)
  {
   destroyApp(false);
   notifyDestroyed();
  }
  else if(c==cmrich)
  {
   display.setCurrent(scelta);
  }
  else if(c==cmBack)
   display.setCurrent(screen);
  else if(c==sel)
  {
   a = dove.getSelectedIndex();
   setRichiesto("Ecco: " + a);
   display.setCurrent(screen);
  }
  else if(c==guid)
  {
   display.setCurrent(guidato);
  }

 }

 public void setGuidato(String s)
 {
  guidato.setString(s);
 }

 public void setRichiesto(String s)
 {
  richiesto.setString(s);
 }
}