Java Queries

EJB interacts with its container through the following mechanisms

Call-back Methods: Every EJB implements an interface (extends EnterpriseBean) which defines several
methods which alert the bean to various events in its lifecycle. A container is responsible for invoking these
methods. These methods notify the bean when it is about to be activated, to be persisted to the database, to
end a transaction, to remove the bean from the memory, etc.

EJBContext:  provides methods for interacting with the container so that the bean can request information
about its environment like the identity of the caller, security, status of a transaction, obtains remote reference
to itself etc. e.g. isUserInRole(), getUserPrincipal(), isRollbackOnly(), etc.

JNDI (Java Naming and Directory Interface): allows EJB to access resources like JDBC connections, JMS
topics and queues, other EJBs etc.

Write a comment

• Required fields are marked with *.

Name:
Email:
Subject:
Comment: *

Security Code: