Get Java version from .tool-versions file

[paulschreiber]

Description:
Please add support for getting the Java version from the .tool-versions file.

Justification:
This is supported by actions/setup-node, which we also use. Having a separate .java-version file (added in 3.9.0) is less efficient.

[aparnajyothi-y]

Hello @paulschreiber, Thanks for the feature request, we will take a look and get back to you with our decision.

[mahabaleshwars]

Hi @paulschreiber,
We have added the functionality to extract the Java version from a .tool-versions file in actions/setup-java@v4.2.2. Hence we are proceeding to close this issue.
Please feel free to reach us in case of any further concerns/clarifications needed.

[paulschreiber]

Thanks. Can you update the README with an example? i.e. do I use
java-version-file: '.tool-versions'

as with actions/setup-node?