1. What is EJB?

EJB technology is the server-side component architecture for the Java 2 Platform, Enterprise Edition (J2EE) platform. EJB technology enables rapid and simplified development of distributed, transactio

what are Container-Managed Transactional attributes ?

Already we have http session in servlets. so why we use session beans ejb?

Are we allowed to change the transaction isolation property in middle of a transaction?

Brief description about local interfaces in EJB?

Local interface: The local interface is a lightweight version of the remote interface, but for local clients. It includes business logic methods that can be called by a local client. 
Local home inte

Can a Session Bean be defined without ejbCreate() method?

Can Entity Beans have no create() methods?
1.Yes
2.No

1.Yes

Can Entity Beans have no create() methods?

Entity Beans have no create() method, when entity bean is not used to store the data in the database. In this case entity bean is used to retrieve the data from database.But it's using the no create()

Can I use session beans and hibernate (instead of entity beans) for persistence?

Can the primary key in the entity bean be a Java primitive type such as int?  

The primary key can't be a primitive type--use the
primitive wrapper classes, instead. For example, you can use
java.lang.Integer as the primary key class, but not int (it
has to be a class, not a