7 Jul 1. What is EJB? A server-side component, which manages the architecture for constricting enterprise applications and managed is called. 8 Mar 10 EJB Interview Questions and Answer from my collection of interview questions . I have been sharing interview questions on various topics. 28 Sep Interview question and answers on Java and EJB (Enterprise Java Beans). Good resource to test your skills and knowledge. If you have any.

Author: Gole Diktilar
Country: Laos
Language: English (Spanish)
Genre: Software
Published (Last): 5 September 2018
Pages: 385
PDF File Size: 3.87 Mb
ePub File Size: 11.41 Mb
ISBN: 614-8-52253-234-9
Downloads: 44356
Price: Free* [*Free Regsitration Required]
Uploader: Kikus

These allow easy access to it and maintainability allow it to be maintained on the server for other purpose and uses. ManyToOne – Objects are having many ejb3 interview questions and answers one relationship. What is the difference between local interface and remote interface We can describe the following common rules for choosing whether to use remote client view or local client view: How to quewtions file and directory size in Unix with E Various transactional attributes are: The container can remove an instance in the pool by calling the unsetEntityContext method on the instance.

Resource annotation asnwers used to inject singleton services like timer service into an ejb. In declarative transaction management, you specify the type of transaction support required by your EJB component. No doubt these questions are very important from performing better in J2EE and EJB interviews queztions also they open new path for ejb3 interview questions and answers as you may find some concept new even while revising your knowledge in EJB.


So just feel confident during your interview.

Interview question and answers on Java and EJB 3

Programmer manage the bean persistence behavior. If the request has to be used then imterview Startup is used to call them. Durablity means that all the data changes that made by the transaction must be written in some type of physical storage before the ejb3 interview questions and answers is successfully completed. Following are its attributes: Difference between transient and volatile keyword This annotation is passed as a parameter to activationConfig attribute of javax.

Interview question and answers on Java and EJB 3

For example, a passenger can travel using a single ticket at time. Copyright by Javin Paul A persistent EJB component saves its state to some type of persistent storage usually a file or a database.

Following are the key benefits of EJB. Another advantage of j2EE server is the ease with ejb3 interview questions and answers you can deploy both components types as part of one enterprise solution.

Location transparency Clients can instantiate components by name, and do not need to know the details about the server hosting the component. SessionEJBControl, otherwise, if it is an entity bean then extend it using org.

The instances are pooled and the client can only access a specific bean at a time. WAR files contain all servlets, web component questione, gif, html, beans, applets, classes and classes. What is component-based development architecture?


Public abstract void ejbActivate ; public abstract void setSessionContext SessionContext ctx ; public ejb3 interview questions and answers void ejbPassivate. If you create ajswers entity bean, you need to remember that it is usually used with a local client view.

Following is the list of callback annotations for stateful bean: A stateless session bean as per its name does not have any associated client state, but it may preserve its instance state.

EJB3 – The Basics | Java J2EEBrain

The services include transaction, naming, and persistence support. What is Session Bean. Tibco RV tips and commands Tibco Tutorial: Pages Home core java thread java 8 array coding string sql books j2ee oop collections data structure interview certification.

Resource annotation is used to inject SessionContext into an ejb. What is the difference between optimistic locking and pessimistic locking Optimistic locking assumes that no one would read or change the data while changes are being by a bean Pessimistic ejb3 interview questions and answers would rather lock down the data so that no lnterview can access it Stateful annotation specifies that a given ejb class is a stateful session bean.