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Evgenii Korolevskii 2022-12-08 10:41:49 +01:00
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README.md
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@ -23,7 +23,7 @@ This action allows you to work with Java and Scala projects.
## Usage
- `java-version`: The Java version to set up. Takes a whole or [semver](#supported-version-syntax) Java version. If not specified, the action will expect `java-version-file` input to be specified. See more details in [about `.java-version` file](docs/advanced-usage.md#Java-version-file).
- `java-version`: The Java version to set up. Takes a whole or [semver](#supported-version-syntax) Java version. If not specified, the action will expect `java-version-file` input to be specified.
- `java-version-file`: The path to the `.java-version` file. See more details in [about `.java-version` file](docs/advanced-usage.md#Java-version-file).

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docs/advanced-usage.md
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```
## Java-version file
If the `java-version-file` input is specified, the action will try to extract the version from the file and install the most suitable version.
If the `java-version-file` input is specified, the action will try to extract the version from the file and install it.
Action is able to recognize all variants of the version description according to [jenv](https://github.com/jenv/jenv).
Valid entry options:
```
major versions: 8, 11, 16, 17
more specific versions: 17.0, 11.0, 11.0.4, 8.0.232, 8.0.282+8
more specific versions: 1.8.0.2, 17.0, 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
versions with specified distribution: openjdk64-11.0.2
```
If the file contains multiple versions, only the first one will be recognized.
If action was able to recognize a version in the file that matches the pattern, then attempts will begin to install the most appropriate version. The logic for installing the appropriate version:
action will try to install the specified version. If this version is not available for a given distribution, action will try to install a less specific version according to the algorithm. Attempts will continue until a suitable version is installed or the attempt to install a version specifying only with major tag fails.
Algorithm for selecting the appropriate version:
If a particular patch specification was present in the version (for example, the early access postfix `-ea*` in `major.minor.patch-ea*` notation), action will try to install the version without it in the format `major.minor.patch`. Next, if the install fails again, action will try to install the `major.minor` version. On failure, action will try to install the `major` version and fail on failure.
If the version was originally specified not in full format, then the process will be similar, but it will not start from the first step.