selectOneChoice to change locale

السلام عليكم

انا حاطط selectOneChoice جواه ar,en

باخد ال value في الكود ده و ما بيشتغلش

    public void handleLanguageSwitch(ValueChangeEvent valueChangeEvent) {
        // Add event code here...
        //StringBuilder sb = new StringBuilder();
        String ss = valueChangeEvent.getNewValue().toString();
        //changeLanguage(ss);
        showMessage(ss/*valueChangeEvent.getNewValue()*/);
        
        if (valueChangeEvent.getNewValue().toString().equals("ar")) {
            showMessage("HHHHHHHH");
            FacesContext context = FacesContext.getCurrentInstance();
            Locale locale = new Locale("ar");
            context.getViewRoot().setLocale(locale);
            
            //FacesContext context = FacesContext.getCurrentInstance();
                //String currentView = context.getViewRoot().getViewId();
               // ViewHandler vh = context.getApplication().getViewHandler();
                //UIViewRoot x = vh.createView(context, currentView);
                //x.setViewId(currentView);
               // context.setViewRoot(x);
        }
        else {
            System.out.println("jjjj");
        }
    }