1. Overview

In this tutorial, we’ll walk through how we can use properties defined in a YAML file to configure values for a Map in our POJO classes.

2. POJO and YAML

POJO classes are Plain Old Java Objects. YAML is a human-readable structured data format that uses indentation to indicate nesting.

2.1. Simple Map Example

Let’s imagine that we are running an online store, and we are creating a service that translates clothing sizes. At first, we are only selling clothes in the UK. We want to know what UK size the label “S”, “M”, “L” and so on refers to. We create our POJO configuration class:

#java #spring #yaml