BEA Weblogic Interview Question:

A client wants to preserve the reference to the EJBHome object of an enterprise bean instance and use it later. Which of the following can be serialized for this purpose?

Submitted by: Administrator

a. Home
b. Handle
c. HomeHandle
d. EJBHomeHandle
e. HomeObject


Choice C is correct. Once a client has obtained the EJBHome object for an EJB instance, it can create a reference to the home object by calling getHomeHandle(). getHomeHandle() returns a HomeHandle object, which can be used to obtain the home interface to the same EJB instance at a later time.
A client can pass the HomeHandle object as arguments to another client, and the receiving client can use the handle to obtain a reference to the same EJBHome object. Clients can also serialize the HomeHandle and store it in a file for later use. The HomeHandle interface has only one method getEJBHome(), which returns the EJBHome reference.
Submitted by: Administrator