# Reference Application
source: https://developer.mastercard.com/mastercom-extended/documentation/reference-app/index.md

## Overview {#overview}

The Mastercom Extended reference application contains sample server-side code that orchestrates making calls to the Mastercom Extended APIs. It is written using Java.

Follow the README within the zip for detailed setup instructions.

## What You Will Learn Using this Reference App {#what-you-will-learn-using-this-reference-app}

> * How to use the reference application
> * How to configure your application for the Sandbox and the Production environments
> * How to test your reference application

## Pre-requisites {#pre-requisites}

* Java 11 or above installed

## Technologies Used {#technologies-used}

* [Spring Boot](https://spring.io/projects/spring-boot)
* [Apache Maven](https://maven.apache.org/)
* [Open API Generator](https://openapi-generator.tech/)

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

Download the Mastercom reference application:
[mastercom-extended-reference-application.zip](https://static.developer.mastercard.com/content/mastercom-extended/reference-application/mastercom-extended-reference-application.zip) (217KB)