<application>
    <message-bundle>ru.resources.messages</message-bundle>
    <locale-config>
      < default -locale>ru</ default -locale>
      <supported-locale>en</supported-locale>
      <supported-locale>es</supported-locale>
      <supported-locale>de</supported-locale>
      <supported-locale>fr</supported-locale>
    </locale-config>
  </application>

     public   void  test( ActionEvent actionEvent ) {
        _logger.debug( "test in." );
        FacesContext context = FacesContext.getCurrentInstance();
        context.getViewRoot().setLocale(  new  Locale( "ru" ) );
        _logger.debug( "test out." );
    }