AngularJS itself doesn't provide any features to translate the texts of your application to different languages and switching the language right on the page. Fornutalty there is now another open-source project called angular-translate that implements the needed functionalities.
AnularJS proposes a technologiy where as much as possible application behevior is exeuted on the client (the browser). So it makes sense to hold translated texts clientside and enrich the static templates with the transalted texts there.
Spring message bundles in the opposite are a collection of serverside key=value files that hold the translated texts each for one language. A well known and widly used pattern.
