New Java Enterprise Edition (J2EE/JEE) Interview Preparation Guide
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J2EE Interview Questions and Answers will guide us now that Java Platform, Enterprise Edition or Java EE is a widely used platform for server programming in the Java programming language. The Java platform (Enterprise Edition) differs from the Java Standard Edition Platform (Java SE) in that it adds libraries which provide functionality to deploy fault-tolerant, distributed, multi-tier Java software, so learn J2EE with the help of this J2EE Interview Questions with Answers guide

112 J2EE Questions and Answers:

Table of Contents:

New  J2EE Job Interview Questions and Answers
New J2EE Job Interview Questions and Answers

1 :: What is J2EE product provider?

A vendor that supplies a J2EE product.

2 :: What is JAXR provider?

An implementation of the JAXR API that provides access to a specific registry provider or to a class of registry providers that are based on a common specification.

3 :: What is JavaServer Pages Standard Tag Library (JSTL)?

A tag library that encapsulates core functionality common to many JSP applications. JSTL has support for common, structural tasks such as iteration and conditionals, tags for manipulating XML documents, internationalization and locale-specific formatting tags, SQL tags, and functions.

4 :: What is JavaMail?

An API for sending and receiving email.

5 :: What is Java Transaction Service (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.

6 :: What is Java Secure Socket Extension (JSSE)?

A set of packages that enable secure Internet communications.

7 :: What is Java Message Service (JMS)?

An API for invoking operations on enterprise messaging systems.

8 :: What is Java API for XML-based RPC (JAX-RPC)?

An API for building Web services and clients that use remote procedure calls and XML.

9 :: What is Java API for XML Processing (JAXP)?

An API for processing XML documents. JAXP leverages the parser standards SAX and DOM so that you can choose to parse your data as a stream of events or to build a tree-structured representation of it. JAXP supports the XSLT standard, giving you control over the presentation of the data and enabling you to convert the data to other XML documents or to other formats, such as HTML. JAXP provides namespace support, allowing you to work with schema that might otherwise have naming conflicts.

10 :: What is Java 2 Platform, Micro Edition (J2ME)?

A highly optimized Java runtime environment targeting a wide range of consumer products, including pagers, cellular phones, screen phones, digital set-top boxes, and car navigation systems.

11 :: What is J2EE module?

A software unit that consists of one or more J2EE components of the same container type and one deployment descriptor of that type. There are four types of modules: EJB, Web, application client, and resource adapter. Modules can be deployed as stand-alone units or can be assembled into a J2EE application.

12 :: What is J2EE application?

Any deployable unit of J2EE functionality. This can be a single J2EE module or a group of modules packaged into an EAR file along with a J2EE application deployment descriptor. J2EE applications are typically engineered to be distributed across multiple computing tiers.

13 :: What is JMS client?

A Java language program that sends or receives messages.

14 :: What is JAXR client?

A client program that uses the JAXR API to access a business registry via a JAXR provider.

15 :: What is JavaServer Pages (JSP)?

An extensible Web technology that uses static data, JSP elements, and server-side Java objects to generate dynamic content for a client. Typically the static data is HTML or XML elements, and in many cases the client is a Web browser.

16 :: What is JavaBeans component?

A Java class that can be manipulated by tools and composed into applications. A JavaBeans component must adhere to certain property and event interface conventions.

17 :: What is Java Transaction API (JTA)?

An API that allows applications and J2EE servers to access transactions.

18 :: What is Java API for XML Registries (JAXR)?

An API for accessing various kinds of XML registries.

20 :: What is Java 2 Platform, Enterprise Edition (J2EE)?

An environment for developing and deploying enterprise applications. The J2EE platform consists of a set of services, application programming interfaces (APIs), and protocols that provide the functionality for developing multitiered, Web-based applications.

21 :: What is J2SE?

Abbreviate of Java 2 Platform, Standard Edition.

22 :: What is J2EE server?

The runtime portion of a J2EE product. A J2EE server provides EJB or Web containers or both.

23 :: What is J2EE product?

An implementation that conforms to the J2EE platform specification.

24 :: What is J2EE component?

A self-contained functional software unit supported by a container and configurable at deployment time. The J2EE specification defines the following J2EE components: Application clients and applets are components that run on the client. Java servlet and JavaServer Pages (JSP) technology components are Web components that run on the server. Enterprise JavaBeans (EJB) components (enterprise beans) are business components that run on the server. J2EE components are written in the Java programming language and are compiled in the same way as any program in the language. The difference between J2EE components and "standard" Java classes is that J2EE components are assembled into a J2EE application, verified to be well formed and in compliance with the J2EE specification, and deployed to production, where they are run and managed by the J2EE server or client container.

25 :: What is ISV?

Independent software vendor.
J2EE Interview Questions and Answers
112 J2EE Interview Questions and Answers