java: error: release version 17 not supported

Question

I recently updated to Intellij 2021.1. However, whenever I try to run my program, I get:

I have tried snooping around for other answers, and have found none. It appears my sdk is version 16, if that helps.

The error message should be clearer. It could say "release version 17 not supported by Maven Runner" or "…not supported by module language level" or "…conflicts with maven property 'maven.compiler.target' or something like that. Incomplete error messages are a pet peeve of mine. — MiguelMunoz, Jul 31 '23 at 19:59

score 38 · Answer 1 · answered May 05 '22 at 20:54

38

There is one more place worth checking -> Java Compiler settings

answered May 05 '22 at 20:54

Wojciech Fornal

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score 28 · Answer 2 · answered Dec 29 '21 at 15:38

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I had the same problem. What helped in my case is the following. In IntelliJ IDEA I opened File -> Project structure and then clicked Modules and changed the Language level to 17. Then I was able to run my code without problems.

answered Dec 29 '21 at 15:38

JustAC0der

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Same with me, selected "JDK Default" – Coder Dev May 03 '22 at 13:57
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Worked for me. +1 Vote. But this is horrendous. Rebuild should actually rebuild everything. Thanks a lot for sharing it though. – Ajay Kumar Jul 06 '22 at 16:53
This answer, is solution to the following error too: java: error: release version 20 not supported too. I set the language level to 17. Installed Jdk by Intellij is 18. – Davoud Nov 13 '22 at 13:45

koppor · Answer 3 · 2022-02-18T23:01:53.773

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Check that a JDK 17 is available at File -> Project Structure -> Platform Settings -> "SDKS"
Select the 17 JDK at File -> Project Structure -> Project Settings -> "Project"
File -> Invalidate Caches... -> (leave defaults) -> "Invalidate and Restart"
Do "Build" -> "Rebuild Project"

edited Feb 18 '22 at 23:01

answered Feb 18 '22 at 22:55

koppor

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score 12 · Answer 4 · answered Sep 16 '21 at 10:11

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This issue happened to me while upgrading to Java 17, I solved it by configuring the new SDK in project structure and invalidate the caches : File --> invalidate caches --> default selection and restart.

answered Sep 16 '21 at 10:11

Radi

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Along with making sure everything points to the version of the jdk you want to use (all over Intellij), this answer is the secret sauce. – Mike Cheel Jun 03 '22 at 22:37

score 9 · Answer 5 · answered Jun 04 '21 at 08:10

I have faced the same error while trying to use version 16.This is because the new version you are trying to use is unstable.

you have to uninstall the version 17 go to: file -> project structure -> SDKs .delete sdk 17 by right clicking on it and then delete. right click on highlighted version(in your case its 17)
now you have to change project sdk go to: file -> project structure -> project . select the previous version which use to work for you , in my case its 15 java version "15.0.2". set project language level to default (SDK default(15-Text blocks))

changing project sdk and project language level
the last part is to change the project configuration sdk go to your navigation bar where you debug your project then select edit configurations . select the sdk 16 for your project (in my case its 15) to change the project configuration sdk

score 7 · Answer 6 · answered Jun 07 '22 at 17:04

7

file => setting => Build,Execution,Deployment => Java Compiler
change Target bytcode version to your current version of project.

answered Jun 07 '22 at 17:04

Mounir bkr

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score 4 · Answer 7 · answered Apr 14 '21 at 20:27

See this answer for the relevant screenshots. Make sure all the source/target levels are configured correctly in all the dialogs. It may be a typo somewhere and 17 is used instead of 1.7 (Java 7).

Inspect .idea/misc.xml file in the project directory, make sure it specifies the correct versions. See also the language levels specified in *.iml module files and in .idea/compiler.xml file.

score 4 · Answer 8 · answered Jul 04 '22 at 10:12

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In my case, I had to change the JAVA_HOME and the Path system environment variable to point to Java 17 (I used Amazon Corretto) as well in addition to updating Language Level and SDK for Project. My modules used inheritedJdk from Project itself. Java Compiler version was also 17.

answered Jul 04 '22 at 10:12

KnockingHeads

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I had the same problem when my JAVA_HOME was pointing to version 11. Intellij still uses this for maven project under the hood dispite what setting i changed in intellij. Took a while to figure this out ;-) – dotnet-provoke Oct 01 '22 at 05:38
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`echo $JAVA_HOME` told me this was the case. I forgot I was using jenv. So just did a `jenv local 17` and it's good now. – Andrew Cheong Mar 07 '23 at 14:45

score 2 · Answer 9 · answered May 24 '21 at 07:37

2

In my case, updating .idea/misc.xml didn't help. I was upgrading from Intellij 2020.2 -> Intellij 2020.4 -> Intellij 2020.1.1. Ended up with a reset: File -> Manage IDE Settings -> Restore Default Settings...

answered May 24 '21 at 07:37

Viacheslav Zholnovach

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score 2 · Answer 10 · edited Feb 16 '22 at 18:16

Your error is likely from IntelliJ attempting to call a Java 17 parser for compliance with Java 17 syntax (regardless of the SDK type) and there is no Java 17 JDK installed to perform the syntax checking with. You have 2 options.

Change 'Language Level' (Project Settings / Project in the Module Settings available from context window - right click - in the project window) to match your current SDK (ignoring possible language conflicts with more recent versions)

Download a Java 17 JDK to perform parsing with. That is in Platform Settings/SDKs in the same context menu, select '+', select 'Download JDK', then download and install a Java 17 version.

score 1 · Answer 11 · answered Apr 27 '21 at 20:08

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In order to fix this I had to change the Ant build setting Execution -> Jun under JDK. For some reason the default was JDK 11, everywhere else I has specified JDK 16. Once I set this to JDK 16 the problem went away.

answered Apr 27 '21 at 20:08

Boulder_on

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score 1 · Answer 12 · answered Nov 04 '21 at 16:38

For similar thing happened when upgrading to java 17. I had it changed everywhere else (suggested by other answers) but in the main maven project .iml file there was still reference to openjdk-16. After manually fixing that to "openjdk-17" it started working well

twu · Answer 13 · 2022-04-22T18:50:20.157

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For me these had to match...

File | Project Structure | Project | Project SDK
File | Project Structure | Modules | Language level
IntelliJ Idea | Preferences | Build, Exec... | Build Tools | Maven | Importing | JDK for importer
system.properties (file) java.runtime.version=
pom.xml - <java.version>

edited Apr 22 '22 at 18:50

answered Apr 19 '22 at 19:45

twu

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score 1 · Answer 14 · answered Feb 01 '23 at 19:40

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This worked for me. I went to Project Settings, clicked on Build, Execution, and Deployment, clicked on Java, clicked on Java Compiler, then changed the Java version (Target bytecode version) to 11.

answered Feb 01 '23 at 19:40

Kalu Ngozi

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Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Feb 03 '23 at 14:14

score 1 · Answer 15 · answered Mar 26 '23 at 12:31

There are two actions to take:

Go to File -> Project structure -> Modules and changed the Language level to 17
Go to IntelliJ IDEA -> Settings -> Build, Execution, Deployment -> Compiler -> Java Compiler. Change your module's Target bytecode version version to 17.

Tejesh Reddy · Answer 16 · 2023-05-24T23:00:01.917

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The solution that worked for me was to download Java version 17. You can do this by navigating to File - Project Structure - SDKs and clicking the + button under the Classpath Download button

edited May 24 '23 at 23:00

answered May 24 '23 at 22:58

Tejesh Reddy

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How is this different from the existing Answers? – ryanwebjackson May 25 '23 at 02:44

score 1 · Answer 17 · answered Aug 13 '23 at 05:26

I have tried all the steps like changing the "Target bytecode version" and "Project bytecode version" and "project language level" but none got worked out. finally I fixed it by upgrading the JDK version from 1.8 to the latest version jdk-20.

Note: Don't forget to change the JAVA_HOME path post upgrading the JDK :)

score 0 · Answer 18 · answered Apr 18 '21 at 12:26

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I had this issue when I was using the default Ant run. When I switched the project to maven with the maven-compiler-plugin with java version set this issue went away.

answered Apr 18 '21 at 12:26

hawkeye

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score 0 · Answer 19 · answered Jan 16 '22 at 02:04

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I solved this by lowering language level

answered Jan 16 '22 at 02:04

Russ115415

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Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Jan 16 '22 at 06:14

score 0 · Answer 20 · answered Oct 19 '22 at 05:06

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for me i spend really lot of time all was configured correctly, but strangely, the pom.xml was ignored, so right click on pom file => maven => unignore project (on all projects and module)

answered Oct 19 '22 at 05:06

cyril

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java: error: release version 17 not supported

20 Answers20