Модуль управления локализацией

import java.util.Locale;

import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;

public class LocaleSubscriber implements EventHandler
{
    private MyForm form;
    //---------------------------------------------------------------
    public LocaleSubscriber (MyForm form) 
    {
        this.form = form;
    }
    //---------------------------------------------------------------
    /**
     * Обработчик события
     */
    @Override
    public void handleEvent(Event event)
    {
        Locale locale = null;
        for (String propertyName : event.getPropertyNames()) {
            // Проверка свойства
            if (propertyName.equalsIgnoreCase("locale")) {
                // Извлекаем передаваемую в событии Locale
                locale = (Locale) event.getProperty(propertyName);
                break;
            }
        }
        // Смена языка локализации интерфейса формы
        if ((form != null) && (locale != null))
            form.changeLocale(locale);
    }
}

public class MyActivator implements BundleActivator
{
    private MyForm         form    = null;
    private BundleContext  context = null;

    private ServiceRegistration<?>  svc_locale;
    private String EVENT_TOPIC_locale = "jabricks/LocaleEvent";
    //---------------------------------------------------------------
    public void start(final BundleContext context) throws Exception
    {
        this.context = context;
        JFrame.setDefaultLookAndFeelDecorated(true);

        IResources resources = new ResourcesImpl();
        form = new MyForm(context, resources.getLocale());

        form.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                form.setVisible(false);
                try {
                    // Останов бандла
                    context.getBundle().stop();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
        
        form.repaint();
        // Открытие окна
        form.setVisible(true);
        
        // Подписка на событие
        Dictionary<String, Object> dict;
        dict = new Hashtable<String, Object>();
        dict.put(EventConstants.EVENT_TOPIC, EVENT_TOPIC_locale);
        LocaleSubscriber subscriber = new LocaleSubscriber(form);
        svc_locale = context.registerService(
                                        EventHandler.class.getName(), 
                                        subscriber, dict);
    }
    public void stop(BundleContext context) throws Exception {
        if (svc_locale != null) {
            svc_locale.unregister();
            svc_locale = null;
        }
    }
}