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improve documentation and more emphasis to Java 17 (#379)
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Dmitry Shibanov
GitHub
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1 changed files with 28 additions and 26 deletions
54
README.md
54
README.md
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# setup-java
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# Setup Java
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<p align="left">
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<a href="https://github.com/actions/setup-java"><img alt="GitHub Actions status" src="https://github.com/actions/setup-java/workflows/Main%20workflow/badge.svg"></a>
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</p>
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[](https://github.com/actions/setup-java/actions/workflows/workflow.yml)
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This action provides the following functionality for GitHub Actions runners:
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The `setup-java` action provides the following functionality for GitHub Actions runners:
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- Downloading and setting up a requested version of Java. See [Usage](#Usage) for a list of supported distributions
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- Extracting and caching custom version of Java from a local file
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- Configuring runner for publishing using Apache Maven
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@ -18,14 +16,17 @@ This action provides the following functionality for GitHub Actions runners:
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This action allows you to work with Java and Scala projects.
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## V2 vs V1
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- V2 supports custom distributions and provides support for Zulu OpenJDK, Eclipse Temurin and Adopt OpenJDK out of the box. V1 supports only Zulu OpenJDK
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- V2 requires you to specify distribution along with the version. V1 defaults to Zulu OpenJDK, only version input is required. Follow [the migration guide](docs/switching-to-v2.md) to switch from V1 to V2
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- V2 supports custom distributions and provides support for Azul Zulu OpenJDK, Eclipse Temurin and AdoptOpenJDK out of the box. V1 supports only Azul Zulu OpenJDK
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- V2 requires you to specify distribution along with the version. V1 defaults to Azul Zulu OpenJDK, only version input is required. Follow [the migration guide](docs/switching-to-v2.md) to switch from V1 to V2
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## Usage
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Inputs `java-version` and `distribution` are mandatory. See [Supported distributions](#supported-distributions) section for a list of available options.
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### Basic
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**Eclipse Temurin**
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### Basic Configuration
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#### Eclipse Temurin
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```yaml
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steps:
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- uses: actions/checkout@v3
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with:
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distribution: 'temurin' # See 'Supported distributions' for available options
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java-version: '17'
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- run: java -cp java HelloWorldApp
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- run: java HelloWorldApp.java
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```
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**Zulu OpenJDK**
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#### Azul Zulu OpenJDK
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-java@v3
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with:
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distribution: 'zulu' # See 'Supported distributions' for available options
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java-version: '11'
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- run: java -cp java HelloWorldApp
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java-version: '17'
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- run: java HelloWorldApp.java
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```
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#### Supported version syntax
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| Keyword | Distribution | Official site | License
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|-|-|-|-|
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| `temurin` | Eclipse Temurin | [Link](https://adoptium.net/) | [Link](https://adoptium.net/about.html)
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| `zulu` | Zulu OpenJDK | [Link](https://www.azul.com/downloads/zulu-community/?package=jdk) | [Link](https://www.azul.com/products/zulu-and-zulu-enterprise/zulu-terms-of-use/) |
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| `adopt` or `adopt-hotspot` | Adopt OpenJDK Hotspot | [Link](https://adoptopenjdk.net/) | [Link](https://adoptopenjdk.net/about.html) |
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| `adopt-openj9` | Adopt OpenJDK OpenJ9 | [Link](https://adoptopenjdk.net/) | [Link](https://adoptopenjdk.net/about.html) |
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| `zulu` | Azul Zulu OpenJDK | [Link](https://www.azul.com/downloads/zulu-community/?package=jdk) | [Link](https://www.azul.com/products/zulu-and-zulu-enterprise/zulu-terms-of-use/) |
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| `adopt` or `adopt-hotspot` | AdoptOpenJDK Hotspot | [Link](https://adoptopenjdk.net/) | [Link](https://adoptopenjdk.net/about.html) |
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| `adopt-openj9` | AdoptOpenJDK OpenJ9 | [Link](https://adoptopenjdk.net/) | [Link](https://adoptopenjdk.net/about.html) |
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| `liberica` | Liberica JDK | [Link](https://bell-sw.com/) | [Link](https://bell-sw.com/liberica_eula/) |
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| `microsoft` | Microsoft Build of OpenJDK | [Link](https://www.microsoft.com/openjdk) | [Link](https://docs.microsoft.com/java/openjdk/faq)
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| `corretto` | Amazon Corretto Build of OpenJDK | [Link](https://aws.amazon.com/corretto/) | [Link](https://aws.amazon.com/corretto/faqs/)
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**NOTE:** The different distributors can provide discrepant list of available versions / supported configurations. Please refer to the official documentation to see the list of supported versions.
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**NOTE:** Adopt OpenJDK got moved to Eclipse Temurin and won't be updated anymore. It is highly recommended to migrate workflows from `adopt` to `temurin` to keep receiving software and security updates. See more details in the [Good-bye AdoptOpenJDK post](https://blog.adoptopenjdk.net/2021/08/goodbye-adoptopenjdk-hello-adoptium/).
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**NOTE:** AdoptOpenJDK got moved to Eclipse Temurin and won't be updated anymore. It is highly recommended to migrate workflows from `adopt` to `temurin` to keep receiving software and security updates. See more details in the [Good-bye AdoptOpenJDK post](https://blog.adoptopenjdk.net/2021/08/goodbye-adoptopenjdk-hello-adoptium/).
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**NOTE:** For Zulu OpenJDK architectures x64 and arm64 are mapped to x86 / arm with proper hw_bitness.
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**NOTE:** For Azul Zulu OpenJDK architectures x64 and arm64 are mapped to x86 / arm with proper hw_bitness.
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### Caching packages dependencies
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The action has a built-in functionality for caching and restoring dependencies. It uses [actions/cache](https://github.com/actions/cache) under hood for caching dependencies but requires less configuration settings. Supported package managers are gradle, maven and sbt. The format of the used cache key is `setup-java-${{ platform }}-${{ packageManager }}-${{ fileHash }}`, where the hash is based on the following files:
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- uses: actions/setup-java@v3
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with:
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distribution: 'temurin'
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java-version: '11'
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java-version: '17'
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cache: 'gradle'
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- run: ./gradlew build --no-daemon
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```
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- uses: actions/setup-java@v3
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with:
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distribution: 'temurin'
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java-version: '11'
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java-version: '17'
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cache: 'maven'
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- name: Build with Maven
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run: mvn -B package --file pom.xml
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- uses: actions/setup-java@v3
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with:
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distribution: 'temurin'
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java-version: '11'
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java-version: '17'
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cache: 'sbt'
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- name: Build with SBT
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run: sbt package
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```
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### Check latest
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In the basic examples above, the `check-latest` flag defaults to `false`. When set to `false`, the action tries to first resolve a version of Java from the local tool cache on the runner. If unable to find a specific version in the cache, the action will download a version of Java. Use the default or set `check-latest` to `false` if you prefer a faster more consistent setup experience that prioritizes trying to use the cached versions at the expense of newer versions sometimes being available for download.
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If `check-latest` is set to `true`, the action first checks if the cached version is the latest one. If the locally cached version is not the most up-to-date, the latest version of Java will be downloaded. Set `check-latest` to `true` if you want the most up-to-date version of Java to always be used. Setting `check-latest` to `true` has performance implications as downloading versions of Java is slower than using cached versions.
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- uses: actions/setup-java@v3
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with:
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distribution: 'adopt'
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java-version: '11'
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java-version: '17'
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check-latest: true
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- run: java -cp java HelloWorldApp
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- run: java HelloWorldApp.java
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```
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### Testing against different Java versions
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runs-on: ubuntu-20.04
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strategy:
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matrix:
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java: [ '8', '11', '13', '15' ]
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java: [ '8', '11', '17' ]
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name: Java ${{ matrix.Java }} sample
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steps:
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- uses: actions/checkout@v3
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with:
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distribution: '<distribution>'
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java-version: ${{ matrix.java }}
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- run: java -cp java HelloWorldApp
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- run: java HelloWorldApp.java
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```
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### Install multiple JDKs
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15
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```
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### Advanced
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### Advanced Configuration
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- [Selecting a Java distribution](docs/advanced-usage.md#Selecting-a-Java-distribution)
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- [Eclipse Temurin](docs/advanced-usage.md#Eclipse-Temurin)
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- [Adopt](docs/advanced-usage.md#Adopt)
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