public class MapLanguageMIDlet extends MIDlet {
    protected void startApp() throws MIDletStateChangeException {
 
        // Please initialise the appId and token first
       ApplicationContext ctx = ApplicationContext.getInstance();
 
        ctx.setAppID("MyAppId");
        ctx.setToken("MyToken");
 
        Display display = Display.getDisplay(this);
        MapLanguageDemo minimalMap = new MapLanguageDemo(display, this);
        display.setCurrent(minimalMap);
    }
    protected void destroyApp(boolean unconditional) throws MIDletStateChangeException {}
    protected void pauseApp() {}
}

public class MapLanguageDemo extends MapCanvas implements CommandListener {
 
    private final Command EXIT = new Command("Exit", Command.EXIT, 1);
    private final static String[] MARC_CODES = {"ARA", "CHI", "GER", "ENG",
        "FRE", "ITA", "RUS", "SPA"
    };
    private final static String[] LANGUAGES = {"Arabic", "Chinese", "German", "English",
        "French", "Italian", "Russian", "Spanish"
    };
    protected MIDlet midlet;
 
    public MapLanguageDemo(Display display, MIDlet midlet) {
        super(display);
        this.midlet = midlet;
        init();
    }
 
    private void init() {
        addCommand(EXIT);
 
        Random r = new Random();
        int i = r.nextInt(LANGUAGES.length);
        ApplicationContext.getInstance().setDefaultLanguage(MARC_CODES[i]);
        setTitle(LANGUAGES[i]);
        setCommandListener(this);
        // Set map over Europe.
        map.setState(
                new MapDisplayState(new GeoCoordinate(53.1, 13.1, 0), 4));
    }
    public void commandAction(final Command c, Displayable d) {
        if (c == EXIT) {
            midlet.notifyDestroyed();
        }
    }
    public void onMapUpdateError(String description, Throwable detail, boolean critical) {
        Alert alertView = new Alert("Map error: ", detail.getMessage(), null, AlertType.ERROR);
        display.setCurrent(alertView);
    }
    public void onMapContentComplete() {
    }
}