# setup-java

GitHub Actions status

This action sets up a java environment for use in actions by: - optionally downloading and caching a requested version of java by version and adding to PATH. Default downloads are populated from the [Zulu Community distribution of OpenJDK](http://static.azul.com/zulu/bin/) - registering problem matchers for error output # Usage See [action.yml](action.yml) ## Basic ```yaml steps: - uses: actions/checkout@v1 - uses: actions/setup-java@v1 with: java-version: '9.0.4' # The JDK version to make available on the path. java-package: jdk # (jre, jdk, or jdk+fx) - defaults to jdk architecture: x64 # (x64 or x86) - defaults to x64 - run: java -cp java HelloWorldApp ``` Examples of version specifications that the java-version parameter will accept: - A major Java version e.g. ```6, 7, 8, 9, 10, 11, 12, 13, ...``` - A semver Java version specification e.g. ```8.0.232, 7.0.181, 11.0.4``` e.g. ```8.0.x, >11.0.3, >=13.0.1, <8.0.212``` - An early access (EA) Java version e.g. ```14-ea, 15-ea``` e.g. ```14.0.0-ea, 15.0.0-ea``` e.g. ```14.0.0-ea.28, 15.0.0-ea.2``` (syntax for specifying an EA build number) Note that, per semver rules, EA builds will be matched by explicit EA version specifications. - 1.x syntax e.g. ```1.8``` (same as ```8```) e.g. ```1.8.0.212``` (same as ```8.0.212```) ## Local file ```yaml steps: - uses: actions/checkout@v1 - uses: actions/setup-java@v1 with: java-version: '4.0.0' architecture: x64 jdkFile: # Optional - jdkFile to install java from. Useful for versions not found on Zulu Community CDN - run: java -cp java HelloWorldApp ``` ## Matrix Testing ```yaml jobs: build: runs-on: ubuntu-16.04 strategy: matrix: # test against latest update of each major Java version, as well as specific updates of LTS versions: java: [ 1.6, 6.0.83, 7, 7.0.181, 8, 8.0.192, 9.0.x, 10, 11.0.x, 11.0.3, 12, 13 ] name: Java ${{ matrix.java }} sample steps: - uses: actions/checkout@master - name: Setup java uses: actions/setup-java@v1 with: java-version: ${{ matrix.java }} - run: java -cp java HelloWorldApp ``` ## Publishing using Apache Maven ```yaml jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v1 - name: Set up JDK 1.8 uses: actions/setup-java@v1 with: java-version: 1.8 - name: Build with Maven run: mvn -B package --file pom.xml - name: Publish to GitHub Packages Apache Maven run: mvn deploy env: GITHUB_TOKEN: ${{ github.token }} # GITHUB_TOKEN is the default env for the password - name: Set up Apache Maven Central uses: actions/setup-java@v1 with: # running setup-java again overwrites the settings.xml java-version: 1.8 server-id: maven # Value of the distributionManagement/repository/id field of the pom.xml server-username: MAVEN_USERNAME # env variable for username in deploy server-password: MAVEN_CENTRAL_TOKEN # env variable for token in deploy - name: Publish to Apache Maven Central run: mvn deploy env: MAVEN_USERNAME: maven_username123 MAVEN_CENTRAL_TOKEN: ${{ secrets.MAVEN_CENTRAL_TOKEN }} ``` The two `settings.xml` files created from the above example look like the following. `settings.xml` file created for the first deploy to GitHub Packages ```xml github ${env.GITHUB_ACTOR} ${env.GITHUB_TOKEN} ``` `settings.xml` file created for the second deploy to Apache Maven Central ```xml maven ${env.MAVEN_USERNAME} ${env.MAVEN_CENTRAL_TOKEN} ``` ***NOTE: The `settings.xml` file is created in the Actions $HOME directory. If you have an existing `settings.xml` file at that location, it will be overwritten. See below for using the `settings-path` to change your `settings.xml` file location.*** See the help docs on [Publishing a Package](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-apache-maven-for-use-with-github-packages#publishing-a-package) for more information on the `pom.xml` file. ## Publishing using Gradle ```yaml jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v1 - name: Set up JDK 1.8 uses: actions/setup-java@v1 - name: Build with Gradle run: gradle build - name: Publish to GitHub Packages run: gradle publish env: USERNAME: ${{ github.actor }} PASSWORD: ${{ secrets.GITHUB_TOKEN }} ``` ***NOTE: The `USERNAME` and `PASSWORD` need to correspond to the credentials environment variables used in the publishing section of your `build.gradle`.*** See the help docs on [Publishing a Package with Gradle](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-gradle-for-use-with-github-packages#example-using-gradle-groovy-for-a-single-package-in-a-repository) for more information on the `build.gradle` configuration file. ## Apache Maven with a settings path When using an Actions self-hosted runner with multiple shared runners the default `$HOME` directory can be shared by a number runners at the same time which could overwrite existing settings file. Setting the `settings-path` variable allows you to choose a unique location for your settings file. ```yaml jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v1 - name: Set up JDK 1.8 for Shared Runner uses: actions/setup-java@v1 with: java-version: 1.8 server-id: github # Value of the distributionManagement/repository/id field of the pom.xml settings-path: ${{ github.workspace }} # location for the settings.xml file - name: Build with Maven run: mvn -B package --file pom.xml - name: Publish to GitHub Packages Apache Maven run: mvn deploy -s $GITHUB_WORKSPACE/settings.xml env: GITHUB_TOKEN: ${{ github.token }} ``` # License The scripts and documentation in this project are released under the [MIT License](LICENSE) # Contributions Contributions are welcome! See [Contributor's Guide](docs/contributors.md)