Async.java

package controllers;

import play.*;
import play.mvc.*;
import play.libs.F.*;

import views.html.*;

public class Application extends Controller {
  
    public static Result index() {

        // This promise will be redeemed after that the response is sent back to the client
        Promise.timeout("Bouh", 10000l).onRedeem(new Callback<String>() {
            public void invoke(String s) {
                System.out.println("YEP " + s + " with request -> " + request());
            }
        });

        return async(
            Promise.timeout("Hello...", 1000l)
                .flatMap(new Function<String,Promise<String>>() {
                    public Promise<String> apply(final String s1) {
                        return Promise.timeout("kiki", 1000l)
                            .map(new Function<String,String>() {
                                public String apply(final String s2) {
                                    return s1 + " " + s2;
                                }
                            });
                    }
                })
                .map(new Function<String,Result>() {
                    public Result apply(String s) {
                        return ok(s + " !!!! " + request());
                    }
                })
                .recover(new Function<Throwable,Result>() {
                    public Result apply(Throwable t) {
                        return internalServerError("OOPS -> " + t);
                    }
                })
        );
    }
  
}