I got the following, quite puzzling error today when running a unit test:

java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/servlet/http/Cookie

A google search found this post, which explains that it is caused by having an interface in the classpath, and not an actual implementation.

In this case it’s the java-ee interface. To fix this I added the jetty servlet api implementation to my pom:

    
        jetty
        javax.servlet
        test

Piece of cake. I have run in to this before, so I figured I would capture the fix here in case I run in to it again.

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