Backward compatible?

[Dalibor Kalna]

Hi there, is Wildfly 27 backwards compatible? I mean, can I deploy Java EE 7 oder Java EE 8 application on it? Or is it not possible beacause of javax -> jakarta change?

Thank you and berst regards

Dalibor

[Emmanuel Hugonnet]

No.
Brian gave all the details of what you can do there:
https://groups.google.com/g/wildfly/c/znDwTiHsD-4/m/TTtq4xl_AAAJ?utm_medium=email&utm_source=footer

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[Scott Marlow]

I agree with Emmanuel but do wonder what you mean exactly?  EE 8/9/10 introduced various changes such as removing certain APIs but Jakarta EE 10 still builds on top of EE 7 SPECs even though there have been changes and removals.

Scott

For reference look at the EE 10 Platform Spec https://jakarta.ee/specifications/platform/10/jakarta-platform-spec-10.0.html

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[Dalibor Kalna]

thank you guys, so the latest which i can use is 26.1.2.Final

[Jürgen Weber]

This important information should be in the release notes.

Juergen