Use Java with Travis CI

The following is a guide to getting started with Travis CI using Java.

Prerequisite #

Before getting started, create a .travis.yml file and add it to the root directory of your Java project. This file defines how Travis CI builds and tests your project.

Specify the Language and JDK Version #

Add the following code to let Travis CI know you are working with Java:

language: java

You can test your project across multiple Java versions. The following example uses OpenJDK 11 and OpenJDK 17.

jdk:
  - openjdk11
  - openjdk17

Install Build Dependencies #

Travis CI automatically installs project dependencies based on your build tool (like Maven or Gradle). For Maven projects, use the following command:

install:
  - mvn install -DskipTests=true -B -V

The command above installs all necessary dependencies without running any tests during the installation.

Define the Test Command #

Use the script key to specify the command you want Travis CI to run your unit tests. For a Maven project, use the following code:

script:
  - mvn test

The code above runs unit tests with the default Maven settings.

Commit and Push #

Once the file is created, commit it to your repository. Travis CI detects the file and automatically starts building and testing your project each time you push a new change. The following is the complete code:

language: java
jdk:
  - openjdk11
  - openjdk17
install:
  - mvn install -DskipTests=true -B -V
script:
  - mvn test

Further Reading #

For more information on Java projects, see:

• Building a Java Project
• Building a JavaScript Project