retrofitexample

   private NYTimesService() {
        HttpLoggingInterceptor loggerInterceptor = new HttpLoggingInterceptor();
        loggerInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
        OkHttpClient client = new OkHttpClient.Builder()
            .addInterceptor(loggerInterceptor)
            .addInterceptor(new Interceptor() {
                @NonNull
                @Override
                public Response intercept(@NonNull Chain chain) throws IOException {
                    Request request = chain.request();
                    HttpUrl urlWithApiKey = request.url()
                                                   .newBuilder()
                                                   .addQueryParameter(PARAM_NAME_APIKEY, APIKEY)
                                                   .build();
                    request = request.newBuilder()
                                     .url(urlWithApiKey)
                                     .build();
                    return chain.proceed(request);
                }
            })
            .build();

        Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(BASE_URL)
            .addConverterFactory(GsonConverterFactory.create(new GsonBuilder().setDateFormat(DATE_FORMAT)
                                                                              .create()))
            .client(client)
            .build();

        mService = retrofit.create(NYTimesApi.class);
    }