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Thorsten Wendelmuth commented on MNG-7135: ------------------------------------------ I think this should have been fixed with maven 3.6.3-2 which is also what Mike Jumper is referring to. However this patch is only part of hirsute or higher, see: [https://launchpad.net/ubuntu/+source/maven] Would be great to see the 3.6.3-2 (or even -5) release also on the focal release lines > maven crashes with jdk 16 > ------------------------- > > Key: MNG-7135 > URL: https://issues.apache.org/jira/browse/MNG-7135 > Project: Maven > Issue Type: Bug > Environment: Linux Mint 20.1 > Reporter: J. K. Singer > Priority: Major > Fix For: waiting-for-feedback, wontfix-candidate > > > Maven does not work with JDK 16, still works with JDK 15, albeit with warning > > export JAVA_HOME=/opt/jdk-15 > mvn archetype:generate -DarchetypeArtifactId=maven-archetype-quickstart > -DarchetypeVersion=1.4 -DgroupId="com.example" -DartifactId="FailDemo" > -Dpackage="com.example.FailDemo" -DinteractiveMode=false > WARNING: An illegal reflective access operation has occurred > WARNING: Illegal reflective access by > com.google.inject.internal.cglib.core.$ReflectUtils$1 > (file:/usr/share/maven/lib/guice.jar) to method > java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) > export JAVA_HOME=/opt/jdk-16 > mvn archetype:generate -DarchetypeArtifactId=maven-archetype-quickstart > -DarchetypeVersion=1.4 -DgroupId="com.example" -DartifactId="FailDemo" > -Dpackage="com.example.FailDemo" -DinteractiveMode=false > [ERROR] Error executing Maven. > [ERROR] java.lang.IllegalStateException: Unable to load cache item > [ERROR] Caused by: Unable to load cache item > [ERROR] Caused by: Could not initialize class > com.google.inject.internal.cglib.core.$MethodWrapper -- This message was sent by Atlassian Jira (v8.3.4#803005)