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If I implement Externalizable, will I need to specify serialVersionUID in that class for version compatibility?
In other words, does Java check serialVersionUID while deserializing Externalizable objects?
Even through a class is Externalizable, one still has to add
a serialVersionUID member to the class to indicate even though
the interface to the class has changed, it is still compatible
as far as the serialized or externalized form of the class.
https://bugs.java.com/bugdatabase/view_bug?bug_id=4094702