Inquiry About Transitioning from Oracle JDK to Adoptium OpenJDK

[NkrumaOra]

Question

Inquiry About Transitioning from Oracle JDK to Adoptium OpenJDK

Context

I hope this message finds you well. I am currently using Oracle JDK and am considering transitioning to Adoptium's Eclipse Temurin OpenJDK. I appreciate the commitment of the Adoptium community to provide high-quality, open-source Java runtimes.

Before making this transition, I would like to clarify a few points regarding the relationship between Oracle JDK and Adoptium OpenJDK:

1. Version Relationship: I am looking for resources that outline the relationships between Oracle JDK versions and their corresponding Adoptium JDK (Temurin) versions. For example, I would like to confirm if Oracle JDK 8u431 aligns with Temurin JDK 8u432, which is based on OpenJDK 8u432. Any documentation or references you can provide would be greatly appreciated.
2. Patch and Bug Fix Schedule: Do Oracle JDK and Adoptium OpenJDK follow the same patch schedule and bug fix policies? Where can I find detailed information about this?

Java version:

8

Your operating system and platform:

window 11

[karianna]

In short, Yes and Yes. See https://adoptium.net/en-GB/support/ for details.

[NkrumaOra]

Could you clarify more on the first question? I searched the release notes and patch fixes for Oracle 8u431 and Temurin JDK 8u432, but it appears they don't indicate that they share the same fix or build from OpenJDK 8u432. Thanks.

[jerboaa]

Could you clarify more on the first question? I searched the release notes and patch fixes for Oracle 8u431 and Temurin JDK 8u432, but it appears they don't indicate that they share the same fix or build from OpenJDK 8u432. Thanks.

They don't. Oracle JDK 8 is maintained as a private fork and OpenJDK 8u is maintained by the community upstream in the open. As such, both releases are bound to diverge as we don't have 100% visibility on what Oracle JDK 8u contains. OpenJDK 8 updates is currently led by Red Hat. So OpenJDK 8u will get security fixes and select other fixes that are deemed important enough for a stable legacy release like JDK 8. You can see the schedule and releases here:
https://wiki.openjdk.org/display/jdk8u

Eclipse Temurin builds on top of this upstream OpenJDK community work. Essentially build binaries, provide installers, container images, ensure they are high quality, pass TCK, etc. for the upstream source-only releases.