Jenkins is an open source automation server that can be using to configure Continuous Integration for rojects written in many programming languages. Let's consider the case of an application that is Java-based and, which has Maven as a build tool.

We need to tell Jenkins where the Maven installable directory is available.

Download the required Maven version or install automatically.

1. Open the Jenkins dashboard.
2. Go to Manage Jenkins.
3. Go to Global Tool Configuration to configure the tools, their locations, and automatic installers.
4. Go to the Maven section.
5. Give the Name and click on Install Automatically, or give the path to the existing location where the Maven installation is available.
6. You can give a logical name such as Maven 3.5.0 or Maven 3.4.0 to identify the correct version while configuring a build job:

7. You can add multiple Mavens based on the version in Jenkins.

When you create a build job in Jenkins and configure it, you need to specify the Maven version that will be used by the build execution. You can use existing Maven installation available on the system as well if you don't want to install automatically.