authentication - Play Framework 2.4.0 - How to retrieve the logged in user in play-java application -

i've created play-java web application, default application controller:

package controllers;  import play.*; import play.mvc.*;  public class application extends controller {      public result index() {         string loggeduser = ""; // request logged in user somehow...         return ok(loggeduser + ", hi there!");     } } 

what need retrieve user name logged in :
i'm visiting "http://localhost:9000" chrome browser, , need retrieve windows logged-in user browses play application, in order check premissions our db users tables.

in servlet api - think possible using:

string name = request.getuserprincipal().getname(); // or string name = request.getremoteuser(); 

in asp. mvc webapi controller- correspond code is:

httpcontext.current.user.identity.name 

how can implement in play-framework simple java application?

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update:
believe need implmenet windows authentication (ntlm) in play java application in order windows username browses play application remotely. can please assist me this?