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	EJB Interview Questions & Answers Below we have listed all the EJB Interview Questions and answers. Feel free to comment on any EJB Interview Questions or answer by the comment feature available on the page. To buy an eBook containing 30,000 Interview Questions, with Answers, Click Here. View All EJB Interview Questions & Answers - Exam Mode / Learning Mode
EJB Interview Questions & Answers
Enterprise Java Beans (EJB) is a development architecture for building highly scalable and robust enterprise level applications to be deployed on J2EE compliant Application Server such as JBOSS, Web Logic etc. Enterprise JavaBeans (EJB) is an architecture for setting up program components, written in the Java programming language, that run in the server parts of a computer network that uses the client/server model.

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Question	Rating	View Answer
What is Session Bean. What are the various types of Session Bean?		View Answer
What is the diff between interface and abstract class?		View Answer
What are advantages and disadvantages of CMP and BMP?		View Answer
What is re-entrant. Is session beans reentrant. Is entity beans reentrant?		View Answer
Already we have http session in servlets. so why we use session beans ejb?		View Answer
What is difference between EJB 1.1 and EJB 2.0		View Answer
Can undefined primary keys are possible with Entity beans?If so, what type is defined?		View Answer
What is the difference between distributed transactions and Flat transactions in EJB?		View Answer
What is re-entrant. Is session beans reentrant. Is entity beans reentrant		View Answer
What is parent class of Hashtable?		View Answer
The EJB container implements the EJBHome and EJBObject classes. For every request from a unique client, does the container create a separate instance of the generated EJBHome and EJBObject classes?		View Answer
Is it legal to have static initializer blocks in EJB?		View Answer
How should I set max-beans-in-free-pool for stateless beans?		View Answer
Explain about the naming and directory services present in EJB?		View Answer
How can I avoid violating NOT NULL constraints on foreign keys that are mapped to cmr-fields?		View Answer
Q. What is the free pool?		View Answer
Is is possible for an EJB client to marshal an object of class java.lang.Class to an EJB?		View Answer
Is Decorator an EJB design pattern?		View Answer
If my session bean with single method insert record into 2 entity beans, how can I know that the process is done in same transaction (the attributes for these beans are Required)		View Answer
What is the difference between Message Driven Beans and Stateless Session beans?		View Answer