My output .jar gives an java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics

Question

The project can be run with 'Run' -> 'Run\'[PACKAGE.NAME].MainKt\'' in Intellij Idea IDE.

However, the I have tried several methods from Stack Overflow, the problem still exists as well as I built jar file, and when run the output jar file jar -jar [JarFilePathInMyComputer].JarFile.jar ,it throws an Exception as below

 Exception in thread "main" java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
        at [PACKAGENAME].MainKt.main(Main.kt)
Caused by: java.lang.ClassNotFoundException: kotlin.jvm.internal.Intrinsics
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
        ... 1 more

My dependencies are

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
    implementation 'org.jetbrains.kotlin:kotlin-runtime:1.2.71'
    implementation "com.google.code.gson:gson:2.8.5"
    implementation 'org.apache.httpcomponents:httpclient:4.5.9'
    testCompile group: 'junit', name: 'junit', version: '4.12'
}

When I add artifacts, OutPut layout contains below kotlin libraries

Gradle: commons-code:commons-codec:1.11
Gradle: org.jetbrains.kotlin-stdlib-jdk8-1.3.21
Gradle: org.jetbrains.annaotations:13.0
Gradle: juniy.junit:4.12
Gradle: org.jetbrains.kotlin:kotlin-stdlib:1.3.21
Gradle: org.jetbrains.kotlin-runtime:1.2.71
Gradle: org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.21
Gradle: org.jetbrains.kotlin:kotlin-stdlib-common:1.3.21

My MANIFEST.MF us

Manifest-Version: 1.0
Main-Class: [PACKAGE.NAME].MainKt
Class-Path: [PACKAGE.NAME]

How can I fix it? I have tried several methods, but the same exception still throws.

Possible duplicate of [Building a self-executable jar with Gradle and Kotlin](https://stackoverflow.com/q/26469365/5221149) — Andreas, Jul 06 '19 at 03:58

score 1 · Answer 1 · answered Jul 07 '19 at 16:23

You need to either add the kotlin runtime to your classpath when invoking java, or you need to build a fat jar file that packages the runtime in your jar file. Personally, I like the fat jar option the best using the shadow plugin.

plugins {
    ...
    id "com.github.johnrengelman.shadow"
}

or you can use the application plugin, that creates a deployable package with windows and unix startup scripts that manage the classpath.

plugins {
    ...
    id "application"
}

There are some other approaches to creating a fat jar given in the answers to this question (as Andreas suggested), and the kotlin examples repository has several projects that use the application plugin.

My output .jar gives an java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics

1 Answers1