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setup-java/README.md
Kengo TODA 08e4e813b8
Introduce the dependency caching for Maven and Gradle (#193) 
* implement a core logic to cache dependnecies

* integrate the cache logic to entry points

* add a user doc about the dependency cache feature

* reflect changes to the dist dir

* add a prefix to the cache key

https://github.com/actions/setup-java/pull/193/files#r669521434

* test: extract build.gradle to a file in __tests__ dir

* run the restore e2e test on the specified OS

* add an e2e test for maven

* fix the dependency among workflows

* stabilize the cache on the Windows in e2e test

* add .gitignore files to __tests__/cache directories

* try to run restore after the authentication

* use the key in state to save caches in the post process

* suggest users to run without daemon if fail to save Gradle cache on Windows

* add missing description in the README.md

* run clean-up tasks in serial

* Add validation for post step (#3)

* work on fixing cache post step

* fix tests

* Update src/cleanup-java.ts

Co-authored-by: Konrad Pabjan <konradpabjan@github.com>

* Update src/cache.ts

Co-authored-by: Konrad Pabjan <konradpabjan@github.com>

* style: put the name of input to the constants.ts

* format: run `npm run build` to reflect changes to the dist dir

* chore: update licensed files by `licensed cache`

it still has three errors as follows:
>* setup-java.npm.sax
>  filename: /Users/kengo/GitHub/setup-java/.licenses/npm/sax.dep.yml
>    - license needs review: other
>
>* setup-java.npm.tslib-1.14.1
>  filename: /Users/kengo/GitHub/setup-java/.licenses/npm/tslib-1.14.1.dep.yml
>    - license needs review: 0bsd
>
>* setup-java.npm.tslib-2.3.0
>  filename: /Users/kengo/GitHub/setup-java/.licenses/npm/tslib-2.3.0.dep.yml
>    - license needs review: 0bsd

* fix: rerun ncc on macOS with node v12

* build: follow the suggestion at PR page

https://github.com/actions/setup-java/pull/193#issuecomment-901839546

* fix: throw error in case of no package manager file found

Co-authored-by: Dmitry Shibanov <dmitry-shibanov@github.com>
Co-authored-by: Konrad Pabjan <konradpabjan@github.com>
2021-08-19 20:19:35 +03:00

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# setup-java
<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>
This action provides the following functionality for GitHub Actions runners:
- Downloading and setting up a requested version of Java. See [Usage](#Usage) for a list of supported distributions
- Extracting and caching custom version of Java from a local file
- Configuring runner for publishing using Apache Maven
- Configuring runner for publishing using Gradle
- Configuring runner for using GPG private key
- Registering problem matchers for error output
- Caching dependencies managed by Apache Maven
- Caching dependencies managed by Gradle
## V2 vs V1
- V2 supports custom distributions and provides support for Zulu OpenJDK, Adopt OpenJDK and Eclipse Temurin out of the box. V1 supports only Zulu OpenJDK
- 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
## Usage
Inputs `java-version` and `distribution` are mandatory. See [Supported distributions](#supported-distributions) section for a list of available options.
### Basic
**Adopt OpenJDK**
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'adopt' # See 'Supported distributions' for available options
java-version: '11'
- run: java -cp java HelloWorldApp
```
**Eclipse Temurin**
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'temurin' # See 'Supported distributions' for available options
java-version: '8'
- run: java -cp java HelloWorldApp
```
**Zulu OpenJDK**
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'zulu' # See 'Supported distributions' for available options
java-version: '11'
- run: java -cp java HelloWorldApp
```
#### Supported version syntax
The `java-version` input supports an exact version or a version range using [SemVer](https://semver.org/) notation:
- major versions: `8`, `11`, `15`
- more specific versions: `11.0`, `11.0.4`, `8.0.232`, `8.0.282+8`
- early access (EA) versions: `15-ea`, `15.0.0-ea`, `15.0.0-ea.2`, `15.0.0+2-ea`
#### Supported distributions
Currently, the following distributions are supported:
| Keyword | Distribution | Official site | License |
|-|-|-|-|
| `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/) |
| `adopt` or `adopt-hotspot` | Adopt OpenJDK Hotspot | [Link](https://adoptopenjdk.net/) | [Link](https://adoptopenjdk.net/about.html)
| `adopt-openj9` | Adopt OpenJDK OpenJ9 | [Link](https://adoptopenjdk.net/) | [Link](https://adoptopenjdk.net/about.html)
| `temurin` | Eclipse Temurin | [Link](https://adoptium.net/) | [Link](https://adoptium.net/about.html)
**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.
#### Supported cache types
Currently, `gradle` and `maven` are supported. You can set `cache` input like below:
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'adopt'
java-version: '11'
cache: 'gradle' # will restore cache of dependencies and wrappers
- run: ./gradlew build
```
### Check latest
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.
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.
For Java distributions that are not cached on Hosted images, `check-latest` always behaves as `true` and downloads Java on-flight. Check out [Hosted Tool Cache](docs/advanced-usage.md#Hosted-Tool-Cache) for more details about pre-cached Java versions.
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'adopt'
java-version: '11'
check-latest: true
- run: java -cp java HelloWorldApp
```
### Testing against different Java versions
```yaml
jobs:
build:
runs-on: ubuntu-20.04
strategy:
matrix:
java: [ '8', '11', '13', '15' ]
name: Java ${{ matrix.Java }} sample
steps:
- uses: actions/checkout@v2
- name: Setup java
uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: ${{ matrix.java }}
- run: java -cp java HelloWorldApp
```
### Advanced
- [Selecting a Java distribution](docs/advanced-usage.md#Selecting-a-Java-distribution)
- [Adopt](docs/advanced-usage.md#Adopt)
- [Zulu](docs/advanced-usage.md#Zulu)
- [Installing custom Java package type](docs/advanced-usage.md#Installing-custom-Java-package-type)
- [Installing custom Java architecture](docs/advanced-usage.md#Installing-custom-Java-architecture)
- [Installing custom Java distribution from local file](docs/advanced-usage.md#Installing-Java-from-local-file)
- [Testing against different Java distributions](docs/advanced-usage.md#Testing-against-different-Java-distributions)
- [Testing against different platforms](docs/advanced-usage.md#Testing-against-different-platforms)
- [Publishing using Apache Maven](docs/advanced-usage.md#Publishing-using-Apache-Maven)
- [Publishing using Gradle](docs/advanced-usage.md#Publishing-using-Gradle)
- [Hosted Tool Cache](docs/advanced-usage.md#Hosted-Tool-Cache)
## License
The scripts and documentation in this project are released under the [MIT License](LICENSE).
## Contributions
Contributions are welcome! See [Contributor's Guide](CONTRIBUTING.md)
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