Support JDK 25 (LTS)

Description:
Support JDK 25 LTS (currently in final release candidate phase).

Justification:
Allow users to try the new LTS ahead of release (for example the removed security manager could break applications).

Are you willing to submit a PR?
Maybe, but 49 open issues and 39 open pull requests don't inspire confidence that all of my work would be allowed to benefit users in a timely fashion...

@reneleonhardt

Hello @reneleonhardt,
Thank you for creating this feature request. We will investigate it and get back to you as soon as we have some feedback.

Actually, you can already use Java 25 as long as the vendor (distribution) provides it.

Here is a working example:

on: push

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v5
    - uses: actions/setup-java@v5
      with:
        distribution: 'temurin'
        java-version: '25-ea'

Thank you for sharing one working distribution!

An equivalent example for Python would be:
https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md#allow-pre-releases

- uses: actions/setup-python@v5
  with:
    python-version: "3.14"
    allow-prereleases: true  # currently resolves to 3.14.0rc2

[JVM25] Trying ea prefix

@osiegmar

@osiegmar not sure how you did this, but I get

  Error: Java setup failed due to network issue or timeout: Early access versions are not supported
  Error: Early access versions are not supported

I created this example repository to demonstrate a working setup: https://github.com/osiegmar/use-java25ea-with-github-actions

Wow, thank you for your time! It does work. Seems that error message need to be updated to clarify that it is not available for the 'oracle' distro, not in general.

[JVM25] Trying to run tests on java 25

Hello there! Just a quick question. When is the release for JDK 25 will be officially released?

Hello João! What release do you mean exactly? 😄

OpenJDK 25 has been released on Tuesday.
https://openjdk.org/projects/jdk/25/

Do you mean a specific distribution like Temurin?
They released some binaries on Wednesday, but it takes a long time until all builds are finalized, that means getting exactly the binary you need is another story.
https://adoptium.net/temurin/releases?version=25&mode=filter&os=any&arch=any
https://github.com/adoptium/temurin25-binaries/releases/tag/jdk-25%2B36

There is no x64 build for ubuntu-latest yet, so setup-java@main is not even listing any 25 releases.
setup-java uses their API, here is a more lenient example, you can see very few x64 binaries are available:
https://api.adoptopenjdk.net/v3/assets/version/%5B24.0.2,25.0.1%5D?project=jdk&vendor=adoptopenjdk&heap_size=normal&sort_method=DEFAULT&sort_order=DESC&jvm_impl=hotspot&release_type=ga

Temurin 25 build progress:
adoptium/temurin#96

I can't say why setup-java handles input versioning totally different between distributions, but that is another story.
For example distribution: corretto allows java-version: 25 which is successfully resolved to the real version 25.0.0+36.2, whereas the temurin code above requires the full semver 25.0.0+36.0.LTS 🤷

Released on Tuesday:
https://github.com/corretto/corretto-25/releases/tag/25.0.0.36.2

Long story short, setup-java supports 25-ea and ga as long as the distribution provides the required architecture and OS, otherwise you can't even know that other 25 binaries already exist, the action only logs older versions in that case.

What I wanted to request is the ability from a user's perspective to use the latest JDK 25, ea or ga if available, to allow the community to help testing the next LTS release before it's finalized and bugfixes would have to be postponed to the first patch release on the JDK side, and userland bugfixes until after the JDK has been released.

Otherwise better error messages like distribution temurin provides JDK 25 but only as prerelease 25-ea or 25.0.0+36.0.LTS but not for your OS ubuntu-24.04 and architecture x64 yet would be appreciated.

And a table of what actually is available would be super helpful in such a case, listing distributions and version numbers so users could choose to switch to a prerelease or another distribution while they are waiting for their preferred distribution binaries.

### Available releases
| distribution | java-version |
|-|-|
| corretto     | 25           |
| temurin      | 25-ea        |
...

Available releases

distribution	java-version
corretto	25
temurin	25-ea

@mahabaleshwars @aparnajyothi-y @HarithaVattikuti @gowridurgad

Would appreciate attention to this issue, given that JDK 25 is already out for nearly a month.

Update core-test.yml

@brunoborges

@brunoborges
Would you happen to know if any progress could be achieved here? Thanks :)

Hello Everyone, Thank you for this feature request.

This has now been implemented through PR #927, which adds support for the Microsoft Java 25 build.

We are closing this issue as the request has been fulfilled. Please feel free to reach out if you have any further questions to reopen this issue.

Update core.yml

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Support JDK 25 (LTS) #899

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v-gowridurgad commented on Aug 25, 2025

osiegmar commented on Aug 29, 2025

reneleonhardt commented on Aug 29, 2025

hurricup commented on Sep 3, 2025

osiegmar commented on Sep 3, 2025

hurricup commented on Sep 3, 2025

jesperancinha commented on Sep 21, 2025

reneleonhardt commented on Sep 21, 2025

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brunoborges commented on Oct 21, 2025

PaulProemer commented on Nov 5, 2025

v-HarithaVattikuti commented on Nov 5, 2025

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