These are some of the questions asked in java interview & technical interview.

1. What is J2EE?

2. What are services J2EE platform include ?

3. What do you understand by a J2EE module?

4. Name the module that J2EE specification specifies ?

5. Explain bean-managed transaction?

6. Name the components of web module?

7. What is binding (XML)?

8. What is caller principal?

9. Define Session Bean ?

10. What is entity bean ?

11. Differentiate between Session Bean and Session Bean.

12. What is Deployment Descriptor?

13. Name the two types of Exceptions?

14.Can a finally block exist with a try block but without a catch?

1.J2EE is an environment for developing and deploying enterprise applications. J2EE is a Java 2 Enterprise Edition. Its platform is one of the richest platforms for the development and deployment of enterprise applications.

2. The J2EE platform is a set of services, application programming interfaces (APIs), and protocols, which provides the functionality necessary for developing multi-tiered, web-based applications.

3. A J2EE module is a software building block that consists of one or more than J2EE components of the same container type along with one deployment descriptor of that type.

4. J2EE specification specifies four characters of modules:

- Web module
- EJB module
- Resource adapter
- Application client

5. The boundaries which are defined by an enterprise bean is called bean-managed transaction.

6. The components of web module are as following:

- Java classes
- JSP files
- Gif and html files and
- Web component deployment descriptors

7.Generating the code needed to process a well-defined portion of XML data.

8.It is principal that identifies the invoker of the enterprise bean method.

9. Session is one of the EJB and it shows a single client inside theApplication Server.

10. An entity bean represents persistent global data from the database. Entity beans data are stored into database.

11.Stateless session bean is easy to develop and it is efficient. As compare to entity beans session beans need few server resources.

12. A deployment descriptor is simply an XML file with the extension of .xml. Application servers reads the deployment descriptor to deploy the components contained in the deployment unit.

13. Checked Exceptions and Unchecked Exceptions

14.Yes it can exist.

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