setup-java/README.md

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# setup-java
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<p align="left">
<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>
</p>
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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/)
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- registering problem matchers for error output
# Usage
See [action.yml](action.yml)
Basic:
```yaml
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steps:
- uses: actions/checkout@v1
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- uses: actions/setup-java@v1
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with:
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java-version: '9.0.4' # The JDK version to make available on the path. Takes a whole or semver JDK version, or 1.x syntax (e.g. 1.8 => Jdk 8.x). To specify a specific version for JDK 8 or older use the following pattern (8.0.x)
java-package: jdk # (jre, jdk, or jdk+fx) - defaults to jdk
architecture: x64 # (x64 or x86) - defaults to x64
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- run: java -cp java HelloWorldApp
```
From local file:
```yaml
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steps:
- uses: actions/checkout@v1
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- uses: actions/setup-java@v1
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with:
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java-version: '4.0.0'
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architecture: x64
jdkFile: <path to jdkFile> # Optional - jdkFile to install java from. Useful for versions not found on Zulu Community CDN
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- run: java -cp java HelloWorldApp
```
Matrix Testing:
```yaml
jobs:
build:
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runs-on: ubuntu-16.04
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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 ]
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name: Java ${{ matrix.java }} sample
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steps:
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- uses: actions/checkout@master
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- name: Setup java
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uses: actions/setup-java@v1
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with:
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java-version: ${{ matrix.java }}
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- run: java -cp java HelloWorldApp
```
# 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)