#16 SUID field should not be obfuscated

[Anonymous]

"private static long serialVersionUID" field is used to override the serialVersionUID automatically created for a given class upon compilation and is of utter importance during serialization/deserialization of classes.
It should never be obfuscated by default.

If you want to learn more about the serialVersionUID field please go to
http://developer.java.sun.com/developer/technicalArticles/Programming/serialization/

and look under the "Version Control" section

BTW:

Great job you did with Jode :-)
It is the best/most configurable obfuscator I've ever found.

[Jochen Hoenicke]

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There is a special class suitable to add to the preserve
option, the SerializePreserver. It is used like this:

preserve = new SerializePreserver,
new Wildcard {...

Besides preserving the serialVersionUID field it will also
preserve all nontransient nonstatic fields, the field
serialPersistentFieldst, the write/readObject methods and
the name of the class for all classes that have a
serialVersionUID.

I will update the documentation so that this feature is
mentioned.

[Nobody/Anonymous]

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hi

I'm facing the same problem. The obfuscated class files are
having different serialVersionUID values. I tried the
suggestion given below by hoenicke.
But it did not work.
Please help.
Thanx
Seema

[Jochen Hoenicke]

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You can check what the SerializePreserver does by looking
for the lines "preserving: ..."

It should preserve most fields and methods in classes that
have a serializeVersionUID constant.

If you also want to preserve serializable classes that
don't have the serialVersionUID field set, you need to set
the option all:
preserve = new SerializePreserver { all="true" },
new Wildcard...

[Jochen Hoenicke]

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user_id=18252

as anonymous pointed out, the option all="true" doesn't
work. You need to to change SerializePreserver.java to
implement OptionHandler (the methods are there, just the
implements is missing), and change
ClassIdentifier.isSerializable() to check for
"java.io.Serializable".