Describe cache key format in readme
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		| @ -64,7 +64,11 @@ Currently, the following distributions are supported: | ||||
| **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/). | ||||
|  | ||||
| ### Caching packages dependencies | ||||
| 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 and maven. The cache input is optional, and caching is turned off by default. | ||||
| 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 and maven. The format of the used cache key is `setup-java-${{ platform }}-${{ packageManager }}-${{ fileHash }}`, where the hash is based on the following files: | ||||
| - gradle: `**/*.gradle*`, `**/gradle-wrapper.properties` | ||||
| - maven: `**/pom.xml` | ||||
|  | ||||
| The cache input is optional, and caching is turned off by default. | ||||
|  | ||||
| #### Caching gradle dependencies | ||||
| ```yaml | ||||
|  | ||||
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	 Daniel Kraus
					Daniel Kraus