Java J2EE Interview Questions and Answers for Experienced - 3

Question: 11

What are the types of J2EE modules?

Application client module

Web module

Enterprise JavaBeans module

Resource adapter module

Question: 12

What is message?

In the Java Message Service, an asynchronous request, report, or event that is created, sent and consumed by an enterprise application and not by a human.

It contains vital information needed to coordinate enterprise applications, in the form of precisely formatted data that describes specific business actions.

Question: 13

What is web service?

An application that exists in a distributed environment, such as the Internet.

A web service accepts a request, performs its function based on the request, and returns a response.

The request and the response can be part of the same operation, or they can occur separately, in which case the consumer does not need to wait for a response.

Both the request and the response usually take the form of XML, a portable data interchange format, and are delivered over a wire protocol, such as HTTP.

Question: 14

What is Java Secure Socket Extension (JSSE)?

A set of packages that enables secure Internet communications.

Question: 15

What is Java Transaction Services (JTS)?

Specifies the implementation of a transaction manager that supports JTA and implements the Java mapping of the Object Management Group Object Transaction Service 1.1 specification at the level below the API.