play framework 2.0 - internationalization - how to translate a message - internationalization

Question

First question: how can I retrieve the translation of a text in a controller?
Second question: how can I retrieve the translation of a text in a template?
The api says that there is a .get method that translates a message:
http://www.playframework.org/documentation/api/2.0/java/play/i18n/Messages.html
However my application does not recognize this method. Opening in eclipse the Message.class shows that there is an .apply method in it, written in Scala and Java!?
object Messages {
/**
* Translates a message.
*
* Uses `java.text.MessageFormat` internally to format the message.
*
* #param key the message key
* #param args the message arguments
* #return the formatted message or a default rendering if the key wasn’t defined
*/
def apply(key: String, args: Any*)(implicit lang: Lang): String = {
Play.maybeApplication.flatMap { app =>
app.plugin[MessagesPlugin].map(_.api.translate(key, args)).getOrElse(throw new Exception("this plugin was not registered or disabled"))
}.getOrElse(noMatch(key, args))
}
Now eclipse tells me that I can invoke this method like this:
> String play.api.i18n.Messages.apply(String arg0, Seq<Object> arg1,
> Lang arg2)
But what should I enter as the "Seq" argument?
--The solution--
The problem was that I imported play.api.i18n.Messages instead of play.i18n.Messages ...
Having defined two message files (messages.de-DE and messages.en-UK) and using the following code everything works fine:
Controller:
import play.i18n.Messages;
import play.api.i18n.Lang;
Lang en = new Lang("en","GB");
play.i18n.Lang en_lang = new play.i18n.Lang(en);
Lang de = new Lang("de", "DE");
play.i18n.Lang de_lang = new play.i18n.Lang(de);
Logger.info(Messages.get("home.title"));
Logger.info(Messages.get(en_lang, "home.title"));
Logger.info(Messages.get(de_lang, "home.title"));
application.conf
application.langs="en-GB,de-DE"

Answer 1

Getting the translation inside the controller:
// in messages file
msg.key=Hello Translation
// in you controller
Messages.get("msg.key");
You can even pass parameters:
// in messages file
msg.key=Hello {0}, here is your translation
//in controller
Messages.get("msg.key", User.firstName);
From the view you can use: Messages("msg.key")
You can even apply HTML formatting (only applicable for views of course):
// in messages file
msg.key=Hello <strong>{0}</strong>, here is your translation
// in controller
Messages.get("msg.key", User.firstName);
//in view
#Html(objectInView)
Please note the following:
Currently it is not possible to define the language explicitly, see bug report: https://play.lighthouseapp.com/projects/82401/tickets/174-20-i18n-add-ability-to-define-implicit-lang-for-java-api
Similar question was asked before:
Access translated i18n messages from Scala templates (Play! Internationalization)
i18n error: controller and templates uses different implicit languages