SEVERE: Running with Java class version 53.0, but 52.0 is required error with Jenkins through command prompt as "java -jar jenkins.war"

Question

I am automation engineer i have deployed my build on the Jenkins using maven, I want to when scripts are executed then the browser should open. I searched on it some peoples says my me Run the Jenkins war file through cmd prompt when I am trying to Run the Jenkins through command prompt as:

java -jar Jenkins.war

Then the system generates an error as follows:

SEVERE: Running with Java class version 53.0, but 52.0 is required error

Anyone have any idea how I can fix the problem?

@Mark Rotteveel The dup target of this question does points us to the main issue of **Unsupported major.minor** but none of the _Answers_ speaks about the solution from **Jenkins** point of view to enable **Jenkins** to run on _Java 10_ and _Java 11_ versions using the command line flags `--enable-future-java`. Please consider reopening the Question. — undetected Selenium, Sep 26 '18 at 13:04
The error message here would be better as actual text in the question. Searchable and copyable. — , Sep 26 '18 at 17:50
Sure, but you also might want to run gradle with the options that show more of the error. — , Sep 27 '18 at 13:58

undetected Selenium · Answer 1 · 2018-09-28T11:24:00.367

This error message...

SEVERE: Running with Java class version 53.0, but 52.0 is required.

...implies that you have tried to initialize Jenkins on a system which is using java class version 53.0 which stands for Java 9.

As per the Jenkins documentation on Java requirements the following are mentioned:

Java 8 is the ONLY supported runtime environment, both 32-bit and 64-bit versions are supported.
Older versions of Java are not supported.
Java 9 is not supported.
Java 10 and Java 11 preview support is available.
Support of these versions is available through custom packages
Running Jenkins with Java 10 and 11 (experimental support) page provides guidelines about running Jenkins with these versions.
These requirements apply to all components of the Jenkins system including Jenkins master, all types of agents, CLI clients, and other components.

Solution

There are two possible solutions as follows:

You can downgrade your Jenkins host JRE to Java 8 version and initiate Jenkins as follows:
```
${JAVA8_HOME}/bin/java -jar jenkins.war
```
You can upgrade your Jenkins host JRE to Java 10 or Java 11 version and initiate Jenkins along with the --enable-future-java flag as follows:
```
${JAVA10_HOME}/bin/java -jar jenkins.war --enable-future-java
```

Running Jenkins (without Docker)

Java 10

Download Jenkins WAR for 2.127 or above (or build the experimental branch)

Run the Jenkins WAR file with the following command:

${JAVA10_HOME}/bin/java --add-modules java.xml.bind -jar jenkins.war \
    --enable-future-java --httpPort=8080 --prefix=/jenkins

Java 11

Download Jenkins WAR for 2.127 or above (or build the experimental branch)
Download the following libraries to the same directory as jenkins.war
- jaxb-api-2.3.0.jar (save as jaxb-api.jar)
- jaxb-core-2.3.0.1.jar (save as jaxb-core.jar)
- jaxb-impl-2.3.0.1.jar (save as jaxb-impl.jar)
- javax.activation v.1.2.0 (save as javax.activation.jar)

Run the Jenkins WAR file with the following command:

${JAVA11_HOME}/bin/java \
    -p jaxb-api.jar:javax.activation.jar --add-modules java.xml.bind,java.activation \
    -cp jaxb-core.jar:jaxb-impl.jar \
    -jar jenkins.war --enable-future-java --httpPort=8080 --prefix=/jenkins

trivia

As per Java class file - Wikipedia following are the major version number of the class file format being used:

Java SE 11 = 55
Java SE 10 = 54
Java SE 9 = 53
Java SE 8 = 52
Java SE 7 = 51
Java SE 6.0 = 50
Java SE 5.0 = 49
JDK 1.4 = 48
JDK 1.3 = 47
JDK 1.2 = 46
JDK 1.1 = 45

Thanks Your dedication , i had upgrade my jre-10.0.2 but still i am facing the error .jenkins required java 8 but you are running 10.0.2 — mudassar munir, Sep 28 '18 at 10:59
@mudassarmunir Checkout my updated answer and let me know the status — undetected Selenium, Sep 28 '18 at 11:24
thanks: i have already installed Jenkins Jenkins-2.138.1 , above mentioned files i has placed in the same directory of Jenkins war, can you tell me how i can run the commands? — mudassar munir, Sep 28 '18 at 14:42
I have already provided the command there within the `Running Jenkins (without Docker) - Java 10` section — undetected Selenium, Sep 28 '18 at 14:46

score 5 · Answer 2 · edited Jun 24 '20 at 05:09

5

java -jar jenkins.war --enable-future-java

edited Jun 24 '20 at 05:09

Jeremy Caney

7,102
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answered Jun 24 '20 at 04:36

Ashish

61
1
2

1

Please add some information into the answer. Just posting a command is not a good answer as such. – akshayk07 Jun 24 '20 at 05:42

score 2 · Answer 3 · answered Mar 29 '21 at 14:17

2

I have installed Java 15 on my system. To run Jenkins with Java 15, please execute the below command.

D:\Selenium\Jenkins>java -jar jenkins.war -httpPort=9090 --enable-future-java

Change path to your war file.

answered Mar 29 '21 at 14:17

Noman

15
6

score 1 · Answer 4 · answered Sep 14 '20 at 12:35

1

Jenkins is supported java version are 8,11 . jenkins not supported older versions and java 9,10,12 and 13 too , you have to downgrade java version to 8 or 11

answered Sep 14 '20 at 12:35

Justin Lambert

940
1
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This was also my issue. Check the Jenkins error log for details. – Klyner Oct 07 '20 at 09:35
are you ok now ? any issues ? – Justin Lambert Oct 07 '20 at 09:41
Installing an older version of java and attach it to Jenkins indeed solved the problem. – Klyner Oct 07 '20 at 09:42

score 0 · Answer 5 · answered Sep 26 '18 at 11:52

0

You have to install JDK8 and set system environment variable 'path' to JDK8 /bin/ folder

answered Sep 26 '18 at 11:52

JanZ

584
2
13

That means, you move back to Java 8. My Solution says that you can use Java 10 but instead of War you need to use Jenkins.exe solution – Ishita Shah Sep 28 '18 at 12:35

score 0 · Answer 6 · answered Sep 26 '18 at 12:12

0

As of now, Jenkins WAR support is compatible up to Java 8.

You are using 9.0.4, Which is higher version from Jenkins recommendation

You can still use Jenkins, With Windows service: Click Here to Download

answered Sep 26 '18 at 12:12

Ishita Shah

3,955
2
27
51

Thanks Your dedication , i had upgrade my jre-10.0.2 but still i am facing the error .jenkins required java 8 but you are running 10.0.2 – mudassar munir Sep 28 '18 at 11:01

SEVERE: Running with Java class version 53.0, but 52.0 is required error with Jenkins through command prompt as "java -jar jenkins.war"

6 Answers6

Solution

Running Jenkins (without Docker)

trivia

Linked