guice-application.java

package controllers;

import com.google.inject.Inject;  
import play.mvc.Controller;  
import play.mvc.Result;  
import services.GreetingService;  
import views.html.index.*;

public class Application extends Controller {

    @Inject
    private GreetingService greetingService;

    public Result index() {
        return ok(index.render(greetingService.greeting()));
    }

}