Java.lang.ExceptionInInitializerError when running Kotlin REPL in Intellij

Question

I have a brand new install of Intellij 2020.3.3 Community and JDK v16. I booted up Intellij, and made sure to update the Kotlin plugin. I created a new Kotlin project, and have made no changes to it. I attempted to run the Kotlin REPL tool (Tools->Kotlin->Kotlin REPL) and I get the following exception:

"C:\Program Files\Java\jdk-16\bin\java.exe" -Dkotlin.repl.ideMode=true -Dfile.encoding=UTF-8     @C:\Users\---\AppData\Local\Temp\idea_arg_file349852720
exception: java.lang.ExceptionInInitializerError
    at com.intellij.pom.java.LanguageLevel.<clinit>(LanguageLevel.java:25)
    at com.intellij.core.CoreLanguageLevelProjectExtension.<init>    (CoreLanguageLevelProjectExtension.java:26)
    at com.intellij.core.JavaCoreProjectEnvironment.<init>(JavaCoreProjectEnvironment.java:42)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreProjectEnvironment.<init>    (KotlinCoreProjectEnvironment.kt:26)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$ProjectEnvironment.<init>    (KotlinCoreEnvironment.kt:121)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:90)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:52)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:88)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:44)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:98)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:76)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:45)
    at org.jetbrains.kotlin.cli.common.CLITool$Companion.doMainNoExit(CLITool.kt:227)
    at org.jetbrains.kotlin.cli.common.CLITool$Companion.doMainNoExit$default(CLITool.kt:222)
    at org.jetbrains.kotlin.cli.common.CLITool$Companion.doMain(CLITool.kt:214)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler$Companion.main(K2JVMCompiler.kt:271)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.main(K2JVMCompiler.kt)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected void     java.util.ResourceBundle.setParent(java.util.ResourceBundle) accessible: module java.base does not "opens     java.util" to unnamed module @55141def
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
    at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
    at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
    at com.intellij.util.ReflectionUtil.makeAccessible(ReflectionUtil.java:252)
    at com.intellij.util.ReflectionUtil.getDeclaredMethod(ReflectionUtil.java:269)
    at com.intellij.DynamicBundle.<clinit>(DynamicBundle.java:22)
    ... 17 more

I have attempted to reinstall the JDK/IDE, and cleared the temp folder. Not sure what else to try, both the IDE and language are new to me. Suggestions?

EDIT

Found workaround: I did another uninstall, and downgraded to JDKv8 and the issue isn't present.

pyknight202 · Accepted Answer · 2021-07-20 05:07:44Z

4

I installed IntelliJ IDEA Community Edition 2021.1.3 today and am using JDK-16.0.1 on my linux PC.

This also happened in my case. I went through all the settings at first then I found that I had a Kotlin update. After my update the Kotlin REPL started without any error.

To update the Kotlin plugin go to Settings -> Languages & Frameworks -> Kotlin.

Click the check again button to know if you have any new update. If so, then update it and restart, then see if Kotlin REPL is working or not.

edited Jul 20, 2021 at 5:07

pyknight202

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answered Jul 17, 2021 at 8:15

Uday

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Comments

Alexis Andrade · Accepted Answer · 2021-06-18 05:36:32Z

3

I fixed it by using JDK 15 instead of 16.

To use JDK 15 follow these steps:

File -> New -> Project...

-> In «Project SDK» go to «Download JDK» and choose «Version: 15» and click Download.

Then just create your project as always (using JDK 15 following the previous steps).

answered Jun 18, 2021 at 5:36

Alexis Andrade

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Ahmad Aghazadeh · Accepted Answer · 2022-01-06 08:45:12Z

2

In this case, all of the compileOptions, the kotlinOptions, and the GradleJdk have the same version. Like the below picture.

answered Jan 6, 2022 at 8:45

Ahmad Aghazadeh

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Ahmed Lotfy · Accepted Answer · 2021-03-26 01:41:03Z

1

I had the same issue during Java upgrades. i use AdoptOpenJDK 16.0.0.j9-adpt and i fixed it by:

Upgrade Gradle version to 7.0-rc-1 (i'm early testing it with Java 16)

Updated my Gradle script with the below section:

compileKotlin {
   kotlinOptions {
      jvmTarget = "15"
   }
}

compileTestKotlin {
   kotlinOptions {
      jvmTarget = "15"
   }
}

Java 16 still not supported yet in the Enum so i had to place it to 15 for now.

answered Mar 26, 2021 at 1:41

Ahmed Lotfy

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Krutin · Accepted Answer · 2021-07-06 04:55:24Z

0

I downloaded adoptopenjdk version 1.8 after creating a new project, and the issue was resolved

answered Jul 6, 2021 at 4:55

Krutin

1

Comments

sam · Accepted Answer · 2022-07-18 03:32:49Z

0

settings -> editor -> plugins -> update kotlin plugin

answered Jul 18, 2022 at 3:32

sam

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1 Comment

Community Over a year ago

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aquilesb · Accepted Answer · 2023-12-20 23:23:52Z

0

It has been a long time since this question was posted but as I can see no final answers were posted, I will give my 2 cents for how I solved the issue.

I solved my problem by adding the Java JVM arguments:

-add-opens java.base/java.util=ALL-UNNAMED

Be aware, that there are multiple Java packages where this can happen, and you can solve all them adding multiple JVM arguments by only changing the Java package.

answered Dec 20, 2023 at 23:23

aquilesb

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