How to determine which class causes the "java.io.InvalidClassException" - "local class incompatible"?

How to determine whic开发者_开发问答h serializable class causes above exception. I tried to read the stack trace, but it is not clear for me... I'm not familiar with the project very well. Thank you!

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From java.io.InvalidClassException javaDoc:

 String     getMessage()
      Produce the message and include the classname, if present.

getMessage() should tell you the name of the offending class.