Recommendation for the java.lang.noclassdeffounderror: could not initialize class org.codehaus.groovy.vmplugin.v7.java7 error

Question

Hi everyone, I'm learning about java. While working, I try use below tools: STS 3.9.10 release, Open JDK 14 64 bit, Spring boot 2.2.5. As a result, I get the message:

java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7  and java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.reflection.ReflectionCache

What can I do about the “java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7” issue? Is there a better approach?

lyytutoria · Accepted Answer

The cause: You are using Gradle as the build system and your JDK14 and the Gradle version is outdated. That is the reason why you have to face with this error now. Solution: This error will be solved if the gradle-wrapper.properties file is editted inside the gradle folder. ( Is not .gradle). Let's replace below line:

distributionUrl=https\://services.gradle.org/distributions/gradle-6.2-all.zip

by

distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip

Then run it again and the error will disappear.

Agathe Gaudin · Answer

How do you run the application. This is likely because you are using Gradle as your build system, JDK14 and Gradle version 10248. Reference: https://github.com/gradle/gradle/issues/10248

Refer to $PROJECT_ROOT/gradle/wrapper/gradle-wrapper.properties if you use Gradle Wrapper $PROJECT_ROOT/gradle/wrapper/gradle-wrapper.properties should be used if you use Gradle Wrapper.

It can be an older version, so you should change it. Run ./gradlew clean build again and try it again.

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Recommendation for the java.lang.noclassdeffounderror: could not initialize class org.codehaus.groovy.vmplugin.v7.java7 error