Gradle Ktlint plugin fails on Java 16

user_277042 0
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After upgrading to Java 16 I am not able to make ktlint gradle plugin to work. It's throwing

Execution failed for task ':runKtlintCheckOverMainSourceSet'.
A failure occurred while executing org.jlleitschuh.gradle.ktlint.worker.KtLintWorkAction
   java.lang.ExceptionInInitializerError (no error message)

Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task     ':runKtlintCheckOverMainSourceSet'.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$3(ExecuteActionsTaskExecuter.java:186)
    at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:268)

Caused by: org.gradle.workers.internal.DefaultWorkerExecutor$WorkExecutionException: A failure occurred while executing org.jlleitschuh.gradle.ktlint.worker.KtLintWorkAction
    at org.gradle.workers.internal.DefaultWorkerExecutor$WorkItemExecution.waitForCompletion(DefaultWorkerExecutor.java:336)
    at org.gradle.internal.work.DefaultAsyncWorkTracker.waitForItemsAndGatherFailures(DefaultAsyncWorkTracker.java:142)
    at org.gradle.internal.work.DefaultAsyncWorkTracker.waitForItemsAndGatherFailures(DefaultAsyncWorkTracker.java:94)
    ...
Caused by: java.lang.ExceptionInInitializerError
        at org.jetbrains.kotlin.com.intellij.pom.java.LanguageLevel.<clinit>(LanguageLevel.java:25)
        at org.jetbrains.kotlin.com.intellij.core.CoreLanguageLevelProjectExtension.<init>(CoreLanguageLevelProjectExtension.java:26)
        at org.jetbrains.kotlin.com.intellij.core.JavaCoreProjectEnvironment.<init>(JavaCoreProjectEnvironment.java:42)
        ...
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 @58f87189
        at org.jetbrains.kotlin.com.intellij.util.ReflectionUtil.makeAccessible(ReflectionUtil.java:252)
        at org.jetbrains.kotlin.com.intellij.util.ReflectionUtil.getDeclaredMethod(ReflectionUtil.java:269)
        at org.jetbrains.kotlin.com.intellij.DynamicBundle.<clinit>(DynamicBundle.java:22)
        ... 32 more

I am aware that it's caused by stricter module checks (JEP 396) but I am not able to set the JVM args for the plugin. I tried:

  • Setting env variable JAVA_OPTS=--illegal-access=warn
  • Setting org.gradle.jvmargs=--illegal-access=warn -Dkotlin.daemon.jvm.options=--illegal-access=warn in gradle.properties

But neither of the attempts helped, I am out of ideas.

ktlint java-16 java-platform-module-system gradle java
2 Answers

It seems that Java 16 is not supported by Gradle 6.x and will be supported by Gradle 7.

user_2770420

You can update the Gradle plugin to get the latest version according to the migration guide:

gradle wrapper --gradle-version 7.0

That should fix this error message. Otherwise, you can also change the version in the file gradle/wrapper/gradle-wrapper.properties.

distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip

I also updated the kotlin plugins like kotlin("jvm") to the latest version 1.4.32.

user_109517520
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