Introduction
This guide shows you how to create a workflow that performs continuous integration (CI) for your Java project using the Ant build system. The workflow you create will allow you to see when commits to a pull request cause build or test failures against your default branch; this approach can help ensure that your code is always healthy. You can extend your CI workflow to upload artifacts from a workflow run.
GitHub-hosted runners have a tools cache with pre-installed software, which includes Java Development Kits (JDKs) and Ant. For a list of software and the pre-installed versions for JDK and Ant, see "Using GitHub-hosted runners".
Prerequisites
You should be familiar with YAML and the syntax for GitHub Actions. For more information, see:
We recommend that you have a basic understanding of Java and the Ant framework. For more information, see the Apache Ant Manual.
Using an Ant workflow template
To get started quickly, add a workflow template to the .github/workflows
directory of your repository.
GitHub provides a workflow template for Ant that should work for most Java with Ant projects. The subsequent sections of this guide give examples of how you can customize this workflow template.
-
On GitHub, navigate to the main page of the repository.
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Under your repository name, click Actions.
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If you already have a workflow in your repository, click New workflow.
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The "Choose a workflow" page shows a selection of recommended workflow templates. Search for "Java with Ant".
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On the "Java with Ant" workflow, click Configure.
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Edit the workflow as required. For example, change the Java version.
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Click Commit changes.
The
ant.yml
workflow file is added to the.github/workflows
directory of your repository.
Specifying the Java version and architecture
The workflow template sets up the PATH
to contain OpenJDK 8 for the x64 platform. If you want to use a different version of Java, or target a different architecture (x64
or x86
), you can use the setup-java
action to choose a different Java runtime environment.
For example, to use version 11 of the JDK provided by Adoptium for the x64 platform, you can use the setup-java
action and configure the java-version
, distribution
and architecture
parameters to '11'
, 'temurin'
and x64
.
steps: - uses: actions/checkout@v4 - name: Set up JDK 11 for x64 uses: actions/setup-java@v4 with: java-version: '11' distribution: 'temurin' architecture: x64
steps:
- uses: actions/checkout@v4
- name: Set up JDK 11 for x64
uses: actions/setup-java@v4
with:
java-version: '11'
distribution: 'temurin'
architecture: x64
For more information, see the setup-java
action.
Building and testing your code
You can use the same commands that you use locally to build and test your code.
The workflow template will run the default target specified in your build.xml file. Your default target will commonly be set to build classes, run tests and package classes into their distributable format, for example, a JAR file.
If you use different commands to build your project, or you want to run a different target, you can specify those. For example, you may want to run the jar
target that's configured in your _build-ci.xml_
file.
steps: - uses: actions/checkout@v4 - uses: actions/setup-java@v4 with: java-version: '17' distribution: 'temurin' - name: Run the Ant jar target run: ant -noinput -buildfile build-ci.xml jar
steps:
- uses: actions/checkout@v4
- uses: actions/setup-java@v4
with:
java-version: '17'
distribution: 'temurin'
- name: Run the Ant jar target
run: ant -noinput -buildfile build-ci.xml jar
Packaging workflow data as artifacts
After your build has succeeded and your tests have passed, you may want to upload the resulting Java packages as a build artifact. This will store the built packages as part of the workflow run, and allow you to download them. Artifacts can help you test and debug pull requests in your local environment before they're merged. For more information, see "Storing and sharing data from a workflow."
Ant will usually create output files like JARs, EARs, or WARs in the build/jar
directory. You can upload the contents of that directory using the upload-artifact
action.
steps: - uses: actions/checkout@v4 - uses: actions/setup-java@v4 with: java-version: '17' distribution: 'temurin' - run: ant -noinput -buildfile build.xml - uses: actions/upload-artifact@v4 with: name: Package path: build/jar
steps:
- uses: actions/checkout@v4
- uses: actions/setup-java@v4
with:
java-version: '17'
distribution: 'temurin'
- run: ant -noinput -buildfile build.xml
- uses: actions/upload-artifact@v4
with:
name: Package
path: build/jar