From dpm Thu Nov 2 13:18:53 2000
Date: Thu, 2 Nov 2000 13:18:53 -0800 (PST)
From: David Mendenhall <dpm@jdc>
Subject: serialVersionUID of HashSet has changed
To: jbloch@eng
Cc: hania@eng
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Hi Josh,

I was running the AWT serialization tests and I noticed that merlin-B39
serialization streams which contain HashSets cannot be read by kestrel.
The serialVersionUID of HashSet has changed as follows:

1.2.1_04c: -5024744406713321676L
1.3: -5024744406713321676L
1.4beta-B38: -5024744406713321676L
1.4beta-B39: -475069990370116654L

In delta 1.20 of HashSet.java, you added a new, public constructor to the
class. This would definitely change the default serialVersionUID of the
class. Oddly, the comments for the method say that the constructor should be
package private. So it looks like you either need to make the constructor
non-public, or add an explicit serialVersionUID to the class.

If you concur, I'd be happy to file a bug and assign it to you.


thanks,
dave mendenhall



Date: Thu, 02 Nov 2000 13:58:02 -0800
From: Joshua Bloch <###@###.###>
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To: David Mendenhall <###@###.###>
Subject: Re: serialVersionUID of HashSet has changed
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David,

   Ouch! That was, indeed supposed to be a package-private constructor.
Thanks for catching this. Please do file a bug, and I'll take care of it.

     Thanks again,
 
     Josh