# Reference App
source: https://developer.mastercard.com/flight-delay-pass/documentation/reference-app/index.md

## Overview {#overview}

Please refer to the reference app below for sample code to authenticate, encrypt and invoke calls to the Flight Delay Pass Service API. The README.md has instructions on generating OpenAPI client.

## Technologies Used {#technologies-used}

* Java 17
* Spring Boot 3.2.5
* Maven 3.6.3

## Get the Source Code {#get-the-source-code}

Download the source code of fdp-reference-app from below

[flight-delay-pass-reference-app.zip](https://static.developer.mastercard.com/content/flight-delay-pass/uploads/flight-delay-pass-reference-app.zip) (30KB)