Re: serialVersionUID

[Brian Jones]

I've added this information to the hacking document, thanks Eric.

Brian

Eric Blake <address@hidden> writes:

> If a class has a field (of any accessibility) named serialVersionUID
> of type long, that is what serialver uses. Otherwise it computes a
> value using some sort of hash function on the names of all method
> signatures in the .class file. I'm not sure whether the methods are
> sorted first, or what the hash function is.  The fact that different
> compilers create different synthetic method signatures, such as
> access$0() if an inner class needs access to a private member of an
> enclosing class, make it impossible for two distinct compilers to
> reliably generate the same serial #, because their .class files
> differ. However, once you have a .class file, its serial # is unique,
> and the computation will give the same result no matter what platform
> you execute on.
> 
> Giannis Georgalis wrote:
> > Thank you Eric, I however had to run the serialver tool on a
> > i386/solaris8 system (I didn't want to install sun's SDK on my
> > computer, just for the serialver tool). Does the output match
> > every system ? Is there a posibility that there are different
> > serialVersionUIDs for different systems?
> >
> 
> -- 
> This signature intentionally left boring.
> 
> Eric Blake             address@hidden
>    BYU student, free software programmer
> 
> 
> 
> 
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-- 
Brian Jones <address@hidden>