To achieve the goal of a multi lingual CQ5-based application, you may use CQ I18n implementation (API) to access the translated strings from the ResourceBundle, according to your language.

In the XML definition of a component, the dialog.xml, use the key directly in the text field, e.g.

fieldLabel="app.component.key"

CQ5 will resolve the reference automatically.

 (...) </mypanel&gt

In Java Script, CQ5 provides the method

CQ.I18n.get('app.component.key')

In Java we implemented a Localization service, that loads all keys from JCR.

In JSP you can use after importing I18n.