A build job is a basic execution unit in Jenkins. We can perform many actions using build jobs. We can execute commands, send notifications, configure Continuous Integration, and so on.

You will need to configure tools based on the application, such as Ant, Gradle, Java, Git, and so on.

1. Open the Jenkins dashboard.
2. Click on New Item.
3. Enter an item name.
4. Select a template Freestyle project.
5. Click on OK:

6. Go to the Source Code Management section and select Git.
7. Provide the Repository URL.
8. Provide Credentials, as demonstrated in the next screenshot:

9. In the Build section, click on the Add build step and select Invoke Ant.
10. Select the Ant name based on our Global Tool Configuration.
11. Provide Targets. In Ant, we can give a target based on the targets defined in the build.xml file:

12. Click on Save.

When you go to the Build Job page and click on Build now, it will execute the build based on the configuration.