> From: Dola Woolfe [mailto:[EMAIL PROTECTED] > Subject: Re: InvalidClassException between Tomcat and Eclipse > > Can you explain the idea behind serialVersionUID
AFAIK, its primary purpose is to insure that the deserialized object is compatible with the the current class definition. Serializable classes distributed with the JRE have explicit serialVersionUID values, and are changed whenever the class implementation changes - not just when methods or fields are updated. It's usually not safe to depend on the automatically generated ID value, since logic changes could produce incompatibilities; best to always set your own and be careful to increment it whenever modifying the class (I think some of the IDEs will do this for you). Look here, especially section 4.6: http://java.sun.com/javase/6/docs/platform/serialization/spec/class.html - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
