Please provide scenarios/conditions those fail during deserialization when a class & serialized object have same serialVersionUID?

Question

Please provide scenarios/conditions those fail during deserialization when a class & serialized object have same serialVersionUID?

I'm looking scenarios like following

1) If a data type of an instance variable is changed then deserialization will fail

Could you please provide all such scenarios. I couldn't find such scenarios list anywhere in the internet.

Thanks

Answer 1

The changes that will make deserialization fail are listed in the Java Object Serialization Specification, Section 5.6.1.

Answer 2

The Exceptions thrown from readObject() give a first impression of what could happen.

http://java.sun.com/j2se/1.4.2/docs/api/java/io/ObjectInputStream.html#readObject()

• ClassNotFoundException - Class of a serialized object cannot be found.
• InvalidClassException - Something is wrong with a class used by serialization.
• StreamCorruptedException - Control information in the stream is inconsistent.
• OptionalDataException - Primitive data was found in the stream instead of objects.
• IOException - Any of the usual Input/Output related exceptions.