plain old play java promises

gistfile1.java

    public static F.Promise<Result> index6() {
        String makesUrl = "http://m.mobile.de/svc/r/makes/Car";
        String modelsUrl = "http://m.mobile.de/svc/r/models/375";

        F.Promise<SvcApi.Makes> makesP = WS
                .url(makesUrl).get()
                .map(response -> gson.fromJson(response.getBody(), SvcApi.Makes.class));

        F.Promise<SvcApi.Models> modelsP = WS
                .url(modelsUrl).get()
                .map(response -> gson.fromJson(response.getBody(), SvcApi.Models.class));

        return Promises.zip(makesP, modelsP, (makes, models) -> ok(Json.toJson(ImmutableList.of(makes, models))));
    }