unsupported Java version: 11

[shah-sid]

Jenkins version - 2.164.2
Gitlab-Hook Plugin version - 1.4.2
Ruby-Runtime version 0.13

Trying to install gitlab-hook plugin in jenkins,
while installing ruby-runtime it throws error

java.lang.RuntimeException: unsupported Java version: 11 at org.jruby.RubyInstanceConfig.initGlobalJavaVersion(RubyInstanceConfig.java:1674) at org.jruby.RubyInstanceConfig.<clinit>(RubyInstanceConfig.java:1387) Caused: java.lang.ExceptionInInitializerError at org.jruby.embed.internal.AbstractLocalContextProvider.<init>(AbstractLocalContextProvider.java:42)

Tried installing Ruby-runtime plugin too but same error.
Please look into it.

Thanks

[Lim-LinYuanbo]

stay tuned

[zhumabek]

Hi, I solved it by changing java version to 8th.
Maybe there is a problem with java 11 compatibility issues.
https://www.jenkins.io/doc/administration/requirements/jenkins-on-java-11/

[yuanzhiying]

Hi, I solved it by changing java version to 8th.
Maybe there is a problem with java 11 compatibility issues.
https://www.jenkins.io/doc/administration/requirements/jenkins-on-java-11/

Thanks.

[Offliner21]

Hello everyone! I still have the same issue with java 11. The compatibility issue still persists on my side I am using Ubuntu 20.04.
Any fix available?
PS: It's mandatory for my project that I work with java 11.

[InfiniteDreamz]

Hi, I solved it by changing java version to 8th.
Maybe there is a problem with java 11 compatibility issues.
https://www.jenkins.io/doc/administration/requirements/jenkins-on-java-11/

How can switch the JVM version to Java 8. I'm using MAC OS Big SUR. Running Jenkins without Docker and just starting with these tools. Please help. @yuanzhiying @zhumabek

[FineRoot1253]

This is the manual solution I think I found. (may not, but this is works to me)

Jenkins version - 2.277.1
OS - Mac os : catalina

First, enter this into the terminal

vi /usr/local/Cellar/jenkins/2.x.x/homebrew.mxcl.jenkins.plist

(2.x.x is 2.277.1 for me.)

Then you will see this.

   <?xml version="1.0" encoding="UTF-8"?>
   <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
   <plist version="1.0">
     <dict>
       <key>Label</key>
       <string>homebrew.mxcl.jenkins-lts</string>
       <key>ProgramArguments</key>
       <array>
         **<string>/usr/local/opt/openjdk@11/bin/java</string>**
         <string>-Dmail.smtp.starttls.enable=true</string>
         <string>-jar</string>
         <string>/usr/local/opt/jenkins-lts/libexec/jenkins.war</string>
         <string>--httpListenAddress=0.0.0.0</string>
         <string>--httpPort=8080</string>
       </array>
       <key>RunAtLoad</key>
       <true/>
     </dict>
   </plist>

     **<string>/usr/local/opt/openjdk@11/bin/java</string>**

change here like this

   <?xml version="1.0" encoding="UTF-8"?>
   <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
   <plist version="1.0">
     <dict>
       <key>Label</key>
       <string>homebrew.mxcl.jenkins-lts</string>
       <key>ProgramArguments</key>
       <array>
         **<string>/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/bin/java</string>**
         <string>-Dmail.smtp.starttls.enable=true</string>
         <string>-jar</string>
         <string>/usr/local/opt/jenkins-lts/libexec/jenkins.war</string>
         <string>--httpListenAddress=0.0.0.0</string>
         <string>--httpPort=8080</string>
       </array>
       <key>RunAtLoad</key>
       <true/>
     </dict>
   </plist>

Then restart brew services
Now ruby-runtime should work normally, I write it down hoping it will help someone.

[chunta]

has ** ?

[FineRoot1253]

has ** ?

@chunta
What does ** mean?

[zhyafe]

I have solved this problem refer to @JunGeunHong1129
Pay attention to two points：

1. none **
2. Use shortcut keys（command+Option+C） to obtain the path