How can I find out the serialVersionUID of a serialized Java object?

Question

I have several serializable classes that were compiled without specifying a serialVersionUID. I now need to add some data members to these classes but wish to preserve some alre

Answer 1

If you haven't modified the code yet you could probably run the serialver tool (part of the JDK) and see what it generates. I believe that will get you what the calculated seriVersionUID is.

Here is a brief article on serialver.