Exception: java.io.StreamCorruptedException: invalid type code: 00

Question

When I query through the EJB interface for a entity, under the console it is ok, but switch to query from Swing it throw this exception.

The exception:

Answer 1

This exception is generated when the the class corresponding to the serialized object that is found by the JVM has the same serialVersionUid as the serialised class, but is actually a different version (ie: changes were made to the class without changing the version id).

Check that you have the relevant jar's/class files in the class path?