NoClassDefFoundError: Mockito Bytebuddy

mockito-core
org.mockito.plugins.mockmaker maven
mockito dependency
classnotfoundexception org mockito mockito
mockito-core jar
latest mockito dependency
mockito illegalstateexception
mockito all 2.8 9

I recently added Mockito to a maven project on eclipse, by adding the external jar "mockito-core-2.0.53-beta.jar", and upon attempting to create my first mock object (Line two in the function)

And upon running it, the console prints out the first line, then throws this error:

It seems like previously there was a similar issue, but it was supposedly fixed internally. https://github.com/raphw/byte-buddy/issues/99

What is going wrong here?

You simply forgot to add the dependencies to your project which are according to the pom file:

<dependency>
  <groupId>net.bytebuddy</groupId>
  <artifactId>byte-buddy</artifactId>
  <version>1.3.16</version>
  <scope>runtime</scope>
</dependency>
<dependency>
  <groupId>org.objenesis</groupId>
  <artifactId>objenesis</artifactId>
  <version>2.1</version>
  <scope>runtime</scope>
</dependency>

In other words you need to add byte-buddy 1.3.16 and objenesis 2.1 to your project too.

More details here

java.lang.NoClassDefFoundError: net.bytebuddy.dynamic.scaffold , I am experiencing the the following error with the following versions of the JARS: mockito-core 2.0.36-beta byte-buddy 0.7.8 I created the  @jaredsburrows, you can still use Mockito 2 with Byte Buddy to mock final classes for local unit testing.. dependencies { // For local unit tests (on your develop machine) testCompile 'org.mockito:mockito-inline:x.y.z' // For instrumented unit tests (on Android emulators and devices) androidTestCompile('com.linkedin.dexmaker:dexmaker-mockito:x.y.z') { exclude group: 'net.bytebuddy' } }

There is a post that explain the problem pretty well, you can find it here:

https://solidsoft.wordpress.com/2012/09/11/beyond-the-mockito-refcard-part-3-mockito-core-vs-mockito-all-in-mavengradle-based-projects/

If you are not using gradle or maven and you are just using mockit-core you should add these dependencies:

<dependency>
  <groupId>net.bytebuddy</groupId>
  <artifactId>byte-buddy</artifactId>
  <version>1.7.9</version>
  <scope>runtime</scope>
</dependency>
<dependency>
  <groupId>org.objenesis</groupId>
  <artifactId>objenesis</artifactId>
  <version>2.4</version>
  <scope>runtime</scope>
</dependency>

ClassNotFound since 2.7.17 · Issue #1017 · mockito/mockito · GitHub, ClassNotFoundException: net.bytebuddy.dynamic. loading. Mockito core depends on a library called byte-buddy and this problem is mostly occurred when​  <artifactId>mockito-core</artifactId> <version>2.0.41-beta</version> Actually, it was a problem of corrupt jars being downloaded. I deleted the two JARS from my .m2 repo and downloaded them again and it worked.

Instead adding

mockito-core

better option will to add

mockito-all

Refer to this link https://mvnrepository.com/artifact/org.mockito/mockito-all/2.0.2-beta

[Solved] IllegalStateException: Could not initialize plugin MockMaker, Is there a known incompatibility between Spring Boot and/or Mockito with jdk-11? findOrInsert(TypeCache.java:138) at net.bytebuddy. Dismiss Join GitHub today. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.

java.lang.NoClassDefFoundError

This indicates that in your .jar (org.mockito), you don't have that class. This usually occurs when you have more than one .jar (with a different version) in your classpath. You could check that.

Mockito error in Spring Boot tests after migrating to JDK 11, net.bytebuddy, byte-buddy, 1.6.5, jar, The Apache Software License, Version 2.0. net.bytebuddy org.mockito:mockito-core:jar:2.7.0 (test) [Information]  ClassNotFoundException is result of a class loader that is not able to load a particular class.. In your case Mockito has a transitive dependency to Objenesis (it needs Objenesis for correct behavior).

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