[jdom-interest] serialVersionUID for JDOM classes

Michael Salmon ms at speakeasy.net
Tue May 28 10:04:37 PDT 2002


Adding the value to just that class didnt work for me, maybe I will
write a script to add it to every single jdom class as a test.
If that doesnt work, god only knows.

ms-

On Tue, May 28, 2002 at 12:28:24PM -0400, Andres March wrote:
> I am sure they use the same version because I use the jar from the distribution on both now.  One in JBuilder for the client and the other in Sun's Servlet Runner for the server.  I agree with your conclusions but I have not been able to prove them.  The fact is I have seen 4 different serialVersionUIDs for just the document class depending upon if I compiled it myself or used the jdom.jar.
> 
> I am now going to attempt adding my own serialVersionUIDs.  I heard that doesn't work either but it's the only thing I have yet to try.  Thanks for the advice and if you have anymore please let me know.
> 
> -Andres
> 
> -----Original Message-----
> From: Daniel Hoppe [mailto:hoppe at sitewaerts.de]
> Sent: Monday, May 27, 2002 12:37 AM
> To: JDOM list (E-mail)
> Subject: RE: [jdom-interest] serialVersionUID for JDOM classes
> 
> 
> Hi Andres,
> 
> are you 100% sure that the server and all clients use the same version of
> JDOM classes? Do you have cached classes somewhere (e.g. an outdated Java
> Web Start Cache, a browser, ...)? The exception quite clearly says that the
> class versions are not the same and this is most probably not a problem of
> the virtual machine version but rather exactly what it says (own
> time-consuming experience). Application servers sometimes have strange
> manners regarding where they hide the libraries you feed them... You can try
> serialver to compare the serialVersionUID of your libraries on client and
> server. 
> 
> I agree that once there is a stable set of classes it would probably be a
> good idea to add a serialVersionUID to prevent this kind of problems.
> 
> Best Regards,
> 
> Daniel
> 
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