What tools and systems are used for automatic Java project building?

The following tools and systems are widely used for automatic building of Java projects:

• Maven — a project management and build automation system that uses the pom.xml file to describe dependencies and build steps.
• Gradle — a modern build tool supporting declarative and scripting approaches (Groovy or Kotlin DSL), often faster and more flexible than Maven.
• Ant — an older tool based on XML scripts, providing flexible control but requiring more manual configuration.

These tools integrate with continuous integration (CI) systems such as Jenkins, GitLab CI, TeamCity, which automatically trigger builds, tests, and deployments upon code changes.

Example of a simple Maven build command:

mvn clean install

Example with Gradle:

gradle build