Forgot to assign serialVersionUID and class changed.

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gappodi@hotmail.com - 12 Aug 2005 04:53 GMT

Hello,

I forgot to assign serialVersionUID to my serializable class. A new
field got added to the class in the newer version. I don't have access
to the old .class now to generate the serialVersionUID from it and
assign it to the newer version.

Anyone knows if its still possible to instantiate the old serialized
class from its persisted version?

Tks & Rgds
Gap

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Hemal Pandya - 12 Aug 2005 09:46 GMT

> Hello,
>
> I forgot to assign serialVersionUID to my serializable class. A new
> field got added to the class in the newer version. I don't have access
> to the old .class now to generate the serialVersionUID from it and
> assign it to the newer version.

If you know which field got added you can remove the field, compile the
class, get its serialVersionUID, add the field back and assign the
serialVersionUID.

> Anyone knows if its still possible to instantiate the old serialized
> class from its persisted version?

Surely you know that the serialized data does not include class
definition.

> Tks & Rgds
> Gap

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