Java object Serializable new Properties

Is there any way to add properties to a class that is saved using:

ObjectOutputStream oos = new ObjectOutputStream(.....));
oos.writeObject(myObject);

I have a number of objects already saved and would like a way to retrieve them into the new version of my object that has additional properties (obviously these will be null until the new version is saved)
Thanks
va3jslAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

nareshvootaCommented:
You have to provide serialVersionUID field manually and ensure it is always the same no matter what changes are made to the file.

http://java.sun.com/developer/technicalArticles/Programming/serialization/

Look for a detailed description of version control in the above article.

Hope this helps.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Sharon SethCommented:
If the serialVersionUID differs (which means the class version has changed) , you will get a incompatible class error while trying to deserialize
0
nareshvootaCommented:
Yes

private static final long serialVersionUID = 12121212L;

put this in the class and the serial version remains same even if you add new fields.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Programming

From novice to tech pro — start learning today.