Given the definition of MyObject and that an instance of MyObject is bound as a session attribute:
8. package com.example;
9. public class MyObject implements
10. javax.servlet.http.HttpSessionBindingListener {
11. // class body code here
12. }
Which is true?
A.
Only a single instance of MyObject may exist within a session.
B.
The unbound method of the MyObject instance is called when the session to which it is bound
times out.
C.
The com.example.MyObject must be declared as a servlet event listener in the web application
deployment descriptor.
D.
The valueUnbound method of the MyObject instance is called when the session to which it is
bound times out.
Explanation: