Why and how is serialization used in Java web applications?

Question

I\'ve been working on a Java web application where the framework insists that everything is Serializable. I assume that this isn\'t specific to the framework but to web app

Answer 1

The typical issue is that during replication, or server shutdown, the internal HTTP Sessions are "Serialized" out to a persistent store so they can be recovered or shared.

Serialization is saving the state of an Object, and being able to reconstitute that state at a later time.