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Re: java.lang.IncompatibleClassChangeError: Implementing class

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Den söndag 13 mars 2016 kl. 20:54:48 UTC+1 skrev Eric Sosman:
> On 3/13/2016 3:24 PM, mike wrote:
> > Hi,
> >
> > I posted this in the group mockito.
> >
> > https://groups.google.com/forum/#!topic/mockito/iJHYQEh9Z3I
> >
> > I ran the same test cases with maven and the old version of the mocked object.
> > That did not give "java.lang.IncompatibleClassChangeError: Implementing class" message.
> >
> > What I suspect is that I have done something in my mocked class that does not make it thread-safe anymore. Does it have to be in my mocked class or in the class it extends. To me the error message does not give me any pointers.
> 
>      Just guessing, because I've never encountered this particular
> error (nor do I use Maven), BUT it doesn't appear to me that lack
> of thread safety is a cause of the problem.  The JVM Specification
> <http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-5.html>
> describes various causes of IncompatibleClassChangeError, and they
> all seem to be involved with troubles that arise while loading,
> linking, or initializing a class (or interface) that the JVM hasn't
> yet seen.  If the error occurs so early in the class' life cycle,
> then none of the class' code has yet had a chance to execute -- so
> whatever bugs might lie in that code have not yet come into play.
> 
>      Still guessing (maybe "speculating" would be better): You mention
> an "old version" of your object, suggesting that there's more than
> one version floating around.  And maybe there are multiple versions
> of some other classes in play, too.  Could it be that Maven has an
> old version of class X in a cache somewhere, and that the old X is
> incompatible with the new Y you're trying to load?
> 
>      As I said: Just guessing.
> 
> -- 
> esosman@comcast-dot-net.invalid
> "Don't be afraid of work. Make work afraid of you." -- TLM

Hi

Thanks for input!

I used the command line maven:

 mvn dependency:tree

That gave me an old version of my jars.

Interesting thing was that this was not visible in eclipse at all.

Thx for pointing me in right direction.

br,

//mike

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java.lang.IncompatibleClassChangeError: Implementing class mike <mikaelpetterson@hotmail.com> - 2016-03-13 12:24 -0700
  Re: java.lang.IncompatibleClassChangeError: Implementing class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-03-13 15:54 -0400
    Re: java.lang.IncompatibleClassChangeError: Implementing class mike <mikaelpetterson@hotmail.com> - 2016-03-14 07:50 -0700

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