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[JENKINS-40689] Java 11 Phase 4: Deprecate support for Java 8 #17749
Description
Currently Jenkins does not support Java 9, but we may want to do it soon. I have created this EPIC to start aggregating issues reported by users.
Assumed that many of the components in Jenkins will need updates for Java 9 support. For example:
- ASM 6.0 supports JDK 9 as of 23 Sep 2017
- Jetty 9.4.8 supports JDK 9 as of 21 Nov 2017 (using ASM 6.0)
Change sources:
- * http://www.oracle.com/technetwork/java/javase/10-relnote-issues-4108729.html
- http://www.oracle.com/technetwork/java/javase/9all-relnotes-3704433.html
Originally reported by 
oleg_nenashev, imported from: Java 11 Phase 4: Deprecate support for Java 8
- status: Resolved
- priority: Major
- component(s): core
- label(s): java11
- resolution: Fixed
- resolved: 2022-02-28T20:49:20+00:00
- votes: 23
- watchers: 51
- imported: 2025-11-24
Raw content of original issue
Currently Jenkins does not support Java 9, but we may want to do it soon. I have created this EPIC to start aggregating issues reported by users.
Assumed that many of the components in Jenkins will need updates for Java 9 support. For example:
- ASM 6.0 supports JDK 9 as of 23 Sep 2017
- Jetty 9.4.8 supports JDK 9 as of 21 Nov 2017 (using ASM 6.0)
Change sources:
Activity
jenkins-infra-bot commentedon Dec 27, 2016
Remote link associated with this issue:
jenkins-infra-bot commentedon Oct 29, 2017
Raw content of original comment:
Jenkins supports Java 9 on Debian if you install OracleJava8 by Webupd8 and replace the binary files with java 9 files from http://jdk.java.net/9/ (or at least it did)
I do not recommend this as it gave me errors in the settings I was not able to resolve by myself. Additionally, I just tested this on a new server and it now says that the version is not supported which is the way it should be.
jenkins-infra-bot commentedon Apr 25, 2018
Raw content of original comment:
I went with sudo update-alternatives --config java.
jenkins-infra-bot commentedon Apr 26, 2018
Raw content of original comment:
Is this planned to be fixed in time for the end of Java 8 support?
See Oracle Java SE Support Roadmap: http://www.oracle.com/technetwork/java/eol-135779.html
Copying:
End of Public Updates for Oracle JDK 8
As outlined in the Oracle JDK Support Roadmap below, Oracle will not post further updates of Java SE 8 to its public download sites for commercial use after January 2019.
jenkins-infra-bot commentedon Apr 26, 2018
Raw content of original comment:
cobexer in the community we do not ETA and roadmap for it right now.
There are some changes happening in the background, and there is a general agreement that we should do it somehow. But the timing may differ.
If the support does not get delivered by Jan 2019, using other JDK distributions may be a temporary solution if you need a Java update. Too early to talk about it now IMHO, the Java 8 EoL date may change again.
jenkins-infra-bot commentedon Apr 26, 2018
Raw content of original comment:
Java 9 is EoL, so I have renamed ticket to Java 10. It does not change the scope much. Java 11, ehm, may be fun
jenkins-infra-bot commentedon Apr 27, 2018
Raw content of original comment:
```
After I switched back to java 8, and then `sudo service jenkins start` jenkins comes back to life again.
I just wanted to add that I ran into the same problem when upgrading our jenkins server to Ubuntu 18.04. antgel's solution `sudo update-alternatives --config java` solves it for me. For those who are interested, here is what happens after executing the command
```
There are 2 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
1 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1101 manual mode
2 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode
```
After I switched back to java 8, and then `sudo service jenkins start` jenkins comes back to life again.
jenkins-infra-bot commentedon May 22, 2018
Raw content of original comment:
> Java 9 is EoL, so I have renamed ticket to Java 10. It does not change the scope much. Java 11, ehm, may be fun
Java 10 will also be EoL soon, in September 2018. On the other hand (Oracle's) Java 11 will be a 5-year Long Term Support version. 11 might be a better target version, instead of pursuing the current rabbit down the hole.
jenkins-infra-bot commentedon May 22, 2018
Raw content of original comment:
> Java 10 will also be EoL soon, in September 2018. On the other hand (Oracle's) Java 11 will be a 5-year Long Term Support version. 11 might be a better target version, instead of pursuing the current rabbit down the hole.
That's correct. We will definitely change the version when really start working on that seriously. Stay tuned
jenkins-infra-bot commentedon Jun 8, 2018
Raw content of original comment:
After some consideration I created a separate EPIC for Java 11:
JENKINS-51805If some tasks here are not feasible for Java 11, we can just close them as "Won't fix"
jenkins-infra-bot commentedon Jun 11, 2018
Raw content of original comment:
Just in case somebody is interested, we are going to have an online "Jenkins & Java 10" hackathon next week.
Everybody is welcome to join, see https://jenkins.io/blog/2018/06/08/jenkins-java10-hackathon/
jenkins-infra-bot commentedon Oct 1, 2018
Raw content of original comment:
Latest status update is here: https://docs.google.com/document/d/1nIz1STmwOVMJ3vx68m6Xc4pv2oEKDRdyeYUNI8zZJsg/edit#heading=h.1478tpp0nycs
We drive this story as a part of Platform Special Interest Group in Jenkins
jenkins-infra-bot commentedon Dec 13, 2018
Raw content of original comment:
We have announced Java 11 support preview in 2.155+ : https://jenkins.io/blog/2018/12/14/java11-preview-availability/
Any feedback will be appreciated
jenkins-infra-bot commentedon Mar 17, 2019
Raw content of original comment:
Java 11 support has been officially released in Jenkins 2.164.1. https://jenkins.io/blog/2019/03/11/let-s-celebrate-java-11-support/
jenkins-infra-bot commentedon Feb 28, 2022
basil:
Raw content of original comment:
Let's declare victory on this epic. I have moved any remaining tasks to a follow-up epic,
JENKINS-67688.52 remaining items