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Learning Modular Java Programming
Learning Modular Java Programming

Learning Modular Java Programming: Explore the power of modular programming for building applications with Java and Spring!

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Learning Modular Java Programming

Chapter 2. Saying Hello to Java EE

To develop a scalable, distributed, well-presented, complex, and multi-layered enterprise application is complicated. The development becomes even worse if the developer is not well aware of the software development fundamentals. Instead of looking at a bigger scenario, if we cut it down into parts and later combine them, it becomes easy for understanding as well as for developing. Each technology has some basics which we cannot overlook. Rather, if we overlook them, it will be the biggest mistake; the same is applicable to Java EE. In this chapter, we are going to explore the following:

  • Java EE technologies
  • Why servlet and JSP?
  • Introduction to Spring MVC
  • Creating a sample application through Spring MVC

The enterprise as an application

To withstand the high, competitive, and daily increasing requirements, it's becoming more and more difficult nowadays to develop an enterprise application. The difficulty is due to more than one kind of service, requirement of application to be robust and should support concurrency, security, and many more. Along with these things, enterprise applications should provide an easy user interface but good look and feel for different users. We are going to explore all these things in detail in this as well as in upcoming chapters.

In the last chapter, we discussed enterprise applications. The discussion was more over understanding the terminology or the aspect. Let's now discuss it in terms of development, and what developers look forward to:

  • The very first thing even before starting the development is: what we are we developing and why? Yes, as a developer we need to understand the requirements or the expectations from the application. Developers have...

The Java EE platform

Sun Microsystems released the Java EE platform in 2000, which was formerly known as the J2EE specification. It defines the standards for developing component-based enterprise applications easily. The concrete implementation is provided by application servers such as Weblogic and GlassFish, and servlet containers such as Tomcat. Today we have Java EE 8 on the market.

Features of the Java EE platform

The following are the various features of the Java EE platform:

  • Platform independency: Different types of information which the user needs in day-to-day life is spread all over the network on a wide range of platforms. Java EE is well adapted to support, and use this widely spread multiple format information on different platforms easily.
  • Modularity: The development of enterprise applications is complex and needs to be well organized. The complexity of the application can be reduced by dividing it into different, small modules which perform individual tasks, which allows for...

Summary

In this chapter, we learned how the application will be single-handedly controlled by the front controller, the dispatcher servlet. The actual work of performing business logic and giving the name of the view, data model back will be done by the Spring MVC controller. The view will be resolved by the front controller with the help of the respective ViewResolver. The view will display the data got from the Spring MVC controller. To understand and explore Spring MVC, we need to understand the web layer, business logic layer and data layer in depth using the basics of Spring MVC discussed in this chapter.

We will start with web layers in the next chapter to find out the answers to some questions such as how to handle forms, how to bind form data, and how to do server-side form validation.

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Key benefits

  • Understand the basic concepts of Modular Programming to build enterprise applications with Java
  • Create short and precise code and eliminate recursion
  • The book follows a step-by-step approach that makes implementing Modular Programming easy

Description

Modular programming means dividing an application into small parts and then developing it. It is an approach taken by developers to build applications and helps them add efficiency in their development process, thus making it more effective. The book starts with the fundamentals of Modular Programming. Then we move on to the actual implementation, where we teach developers how to divide an application into different modules or layers (such as presentation, execution, security, lifecycle, services, and so on) for better management. Once readers are well-versed in these modules and their development, the book shows how to create bindings in order to join these different modules and form a complete application. Next, the readers will learn how to manage these modules through dependency injection. Later, we move on to testing; readers will learn how to test the different modules of an application. The book ends by teaching readers how to maintain different versions of their application and how to modify it. By the end of the book, readers will have a good understanding of modular programming and will be able to use it to build applications with Java.

Who is this book for?

This book targets Java developers who have a basic knowledge of application development with Java and are interested in learning the Modular Programming approach for building reusable applications that are easy to test, and thus improve overall project management.

What you will learn

  • * Learn about Modular Programming and what modules an enterprise application can be divided into.
  • * Set up a development environment and create a "Hello World" application.
  • * Start implementing a sample application from the presentation layer.
  • * Implement the persistence layer.
  • * Implement the business layer, wrapping up all of the modules with Contexts and Dependency Injection (CDI).
  • * Manage an application s life cycle.
  • * Learn how to secure Web applications.
  • * Test enterprise applications and their automation.
  • * Understand how to version source code using Source Code Management (SCM) systems such as GIT and SVN.
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Jun 30, 2016
Length: 226 pages
Edition : 1st
Language : English
ISBN-13 : 9781785888823
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Length: 226 pages
Edition : 1st
Language : English
ISBN-13 : 9781785888823
Vendor :
Pivotal
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Table of Contents

9 Chapters
1. Introducing Modular Programming Chevron down icon Chevron up icon
2. Saying Hello to Java EE Chevron down icon Chevron up icon
3. Implementing the Presentation Layer Chevron down icon Chevron up icon
4. Talking to the Database Chevron down icon Chevron up icon
5. Developing the Business Layer Chevron down icon Chevron up icon
6. Testing Your Application Chevron down icon Chevron up icon
7. Securing the Application Chevron down icon Chevron up icon
8. Versioning and Deploying Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
(4 Ratings)
5 star 25%
4 star 25%
3 star 0%
2 star 25%
1 star 25%
Java_Guy Jan 28, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Excelling book for beginners in Java Modular programming with Spring Framework. Would recommend this for newbies who wish to learn Spring Framework from scratch.
Amazon Verified review Amazon
Dionisios Petrakopoulos Jul 31, 2016
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
A good introductory book on modular Java programming with emphasis on the Spring framework. It explains how an application is divided into modules and how these modules interact with each other. The various layers of an application (presentation, persistence, business) are presented in different chapters with source code examples. There are also separate chapters on testing the application, securing it with Spring security and source code management with SVN.
Amazon Verified review Amazon
Brad Parker Sep 17, 2016
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
Not enough detail. Returning book.
Amazon Verified review Amazon
Jayakumar Jan 12, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Doesn't worth the money
Amazon Verified review Amazon
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