J2EE

J2EE, Java2 Platform Enterprise Edition from Sun Microsystems, is a technology that is used to minimize complexities of the design and implementation of enterprise applications. Enterprise application frameworks are used in web technologies, security, transaction processing, multithreading, n-tier architectures and component based software development. J2EE is a flexible software, allowing the programmer to deploy J2EE to any application server with minimal changes. J2EE is a reliable and standardized software architecture, guaranteeing longevity of applications and supporting decrease in future costs of development.

J2EE platform supports four-tier application model, including client tier, web tier, business tier and enterprise application model (EIS) tier. J2EE server or application server usually includes business and web tiers. J2EE’s application components from web client or application client exist within the client tier.

J2EE architecture uses containers to separate the complex services of an enterprise application. Transaction and state management, resource pooling and multi-threading are the low level services that J2EE separates from the application logic through their implementation in containers.

IT Professionals can use existing tutorials in the J2EE section to heighten programming skills and development capabilities within Java 2 Platform, Enterprise Edition in Application Development. J2EE articles are excellent tools for any J2EE engineer specializing in J2EE Software Development, Architecture, Web Developer or Consultant.

 

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This tutorial is about building Java 2 Platform Enterprise Edition J2EE components using Eclipse as an Integrated Development Environment IDE and JBOSS as the Application Server. Tutorial covers step-by-step development of J2EE components starting from setting up Eclipse JBOSS and Lomboz. Lomboz uses Xdoclet Attribute Oriented Programming for...
An MVC song has been written and performed by James Dempsey Apple Operations Engineer at the Apple Worldwide Developers Conference 2003. Click here to listen to the MVC song. The goal of the Model-View-Controller Model 2 framework is to separate the application object model from the way it is represented to the user view from the way in which...
We started EJB training. It is divided into 3 Parts. Part 1 - Covers the basic concepts of EJB s. Part 2 - Covers the advanced topics in EJB s. Part 3 - Sample project with an example. Note We will update the content on weekly basis. Part 1 covers the following lessons 1.EJB Overview 2.Enterprise JavaBeans Defined 3.JavaBeans EJB Comparison...
Rational Unified Process or RUP is a configurable software development process platform that delivers proven best practices and a configurable architecture. It enables you to select and deploy only the process components you need for each stage of your project. This talks about phases iterations workflows of the Rational Unified Process and thier...
This is one of the best JDBC 2.0 tutorial which covers the following topics with examples. -JDBC Driver types.-Creating a connection.-Statement Prepared Statement Callable Statement.-Summary of New features in JDBC 2.1 The tutorial covers the following topics in detail Click here for the tutorial. 1 Introduction 1.1 What the JDBC...
With XDoclet it is possible to embed metadata within Javadoc which is later used to generate the stuff that makes EJB and other J2EE technologies work. Attribute oriented software development can reduce the workload for complex systems... here is how it is done. Click here for the overview....
The best practices1. Always use MVC. 2. Apply automated unit tests and test harnesses at every layer. 3. Develop to the specifications not the application server. 4. Plan for using J2EE security from Day One. Click here for the article....
This tutorial uses WebSphere Studio Application Developer Version 5.0 to develop test run and debug a complete J2EE application consisting of entity and session EJBs a servlet a JSP page and an HTML home page. Focusing extensively on EJB development the entire application will use only the Application Developer tools and run times available straight...
This article shows the design approach the implementation and the test results for a sample J2EE application that provides a basic comparison of the local and remote interface usage for Enterprise Java Beans. Click here for the article....
This tutorial demonstrates how to use WebSphere Studio Application Developer Version 5.0 to develop a complete J2EE application consisting of a session EJB a servlet a JSP page and an HTML home page. It then demonstrates how to deploy the application onto the open source JBoss application server Version 3.0.4 integrated with Tomcat Version 4.1.12...
An Ant script is an XML file which is used to define targets which run various Ant tasks as a part of your build procedures. The Ant structure is made up of target elements which then contain task elements. Target elements can specific depends attributes which require the specified targets to be run at least once before the current target starts. Each...
This article discusses daemon threads how they can be created within your code using the Thread.setDaemon method and behind the scenes by the AWT. It also cautions against using them. Have you ever wondered why it s necessary to call System.exit to force your Java GUI application to exit Have a look at the following code 1 import...
It turns out that there are times when a HashSet TreeSet ArrayList approach is more efficient than a HashSet-only approach and times when it is not. This is interesting because the former maintain order while the latter does not. Here is some code that runs tests on most of the cases discussed above. It compares HashSet to TreeSet as well as both...
This is a web based chat application and uses only JSP and Servlets. It doesn t use applets activeX controls or database. It isn t a commercial application but just a demo which shows how JSP and Servlets can be used. If you know java and JSP you can also download source code of Java Classes and try to extend this application yourself. Click here...
Here is a link to our 4-day Java Object-Oriented Programming Course. It s online and it s free. Contents Day 1 Object-Oriented Software Development Credits and Other Material Why OO Benefits of object-oriented programming Symptoms of software development problems Root causes of project failure Software development best...
Swing refers to the new library of GUI controls buttons sliders checkboxes etc. that replaces the somewhat weak and inflexible AWT controls. This tutorial is aimed at getting Java programmers who already know the AWT going as quickly as possible in Swing. Note An updated and expanded version of this material appears in Core...
Welcome to Java Data Structures 2nd edition . This document was created with an intent to show people how easy Java really is and to clear up a few things I ve missed in the previous release of the document. Download Java Source code for all examples from here JavaData.zip Please click on the links below. VariablesArraysArray StackArray...
Welcome to the first part of my 3 series articles on developing SOAP based applications using Java. This series is not a detailed description of SOAP protocol but just a quick-start tutorial to demonstrate how we can use Java and SOAP together. In the fist part I will cover the basic anatomy of SOAP the installation of Apache SOAP 2.2 and configuration...
This tutorial introduces you to some of the new features in the latest release of JDeveloper 10g. The latest release of JDeveloper 10g offers a host of new features. This tutorial introduces some of those that are of particular interest to the Java developer productivity improvements in the Code Editor unit testing with JUnit and using Apache Ant...
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