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Add set-default option

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This option allows to install an additional JDK without making it the
default one.

I have wanted this for quite a long time as I'm running custom GitHub
Actions with Java, which might require a specific JDK and I don't want
to pollute the JDK that is used by the overall workflow calling the
action.
And I'm apparently not alone as there was a preexisting issue.

Fixes #560
This commit is contained in:
Guillaume Smet
2026-06-12 18:24:58 +02:00
committed by GitHub
parent 808209e61e
commit 9eb9a7c9b3
12 changed files with 282 additions and 12 deletions
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README.md
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@@ -41,6 +41,8 @@ For more details, see the full release notes on the [releases page](https://git
- `check-latest`: Setting this option makes the action to check for the latest available version for the version spec.
- `set-default`: Set to `false` to install a JDK without making it the default. When `false`, `JAVA_HOME` and `PATH` are not updated, but `JAVA_HOME_<major>_<arch>` is still set so the JDK remains discoverable. Default value: `true`. See [Installing JDK without setting as default](docs/advanced-usage.md#Installing-JDK-without-setting-as-default) for more details.
- `cache`: Quick [setup caching](#caching-packages-dependencies) for the dependencies managed through one of the predefined package managers. It can be one of "maven", "gradle" or "sbt".
- `cache-dependency-path`: The path to a dependency file: pom.xml, build.gradle, build.sbt, etc. This option can be used with the `cache` option. If this option is omitted, the action searches for the dependency file in the entire repository. This option supports wildcards and a list of file names for caching multiple dependencies.