Chapter 1, Spring at Glance, explores the Spring Framework to grab the fundamental knowledge about what the framework is and its requirement. We will be discussing the journey of the framework and major changes which have taken place.

Chapter 2, Dependency Injection, talks about the basics of Spring. You will deep dive into the ocean of Spring fundamentals and it's working. You will explore the power of beans, dependency injection, bean scope, bean wiring, and many more things along with configurations.

Chapter 3, Accelerate with Spring DAO, deals with data handling to and from database. You will see and understand how Spring handles database using the concept of templates. You will also explore the ORM configuration and using cache in the application.

Chapter 4, Aspect-Oriented Programming, explains the cross-cutting technologies, the role played by them in an application, the traditional approach to handle them, and how Spring handles them. You will explore the concepts of aspects, pointcuts, advice, and weaving.

Chapter 5, Be Consistent - Transaction Management, explores database transaction management, its importance and types. You will be dealing with annotation-based transaction management done in a Spring application.

Chapter 6, Explore Spring MVC, talks a lot about Spring involved in developing web applications. You will be developing a web application step by step, incorporated with MVC architecture for form preprocessing, form handling, form validation, and many more such things.

Chapter 7, Be Assured, Take a Test Drive, is all about testing. You will be involved in understanding the importance of testing and the ways of testing an application. You will learn how to test Spring application using techniques such as Mock testing, Spring TestContext Framework, and Mockito testing. You will also see an introduction to Arquillian.

Chapter 8, Make It Safe - Security Managements, talks about securing management and ways to achieve it. You will see working of Spring security management with BASIC and FORM-based authentication. You will also get exposure to securing views and method-level security.

Chapter 9, Explore the Power of RESTful Web Services, is about web services, importance of web service, and its types. You will be developing an application using the concepts of RESTful webservices. You will be testing the developed application using Postman and RestTemplate for the testing purpose.

Chapter 10, Exchange Information - Use Messaging, deals with messaging using WebSocket. The chapter talks about STOMP along with an application development.

Chapter 11, Be Active - Reactive Programming, is about reactive programming as the most interesting new entry in Spring Framework. The chapter talks about basics of the reactive programming. You will also get orientation to the Spring support for reactive programming by developing an application. This chapter deals with messaging using WebSocket. The chapter talks about STOMP along with an application development.

All you need is curiosity and patience along with the practical knowledge of Java. Any person who has basic practical knowledge of JDK and XML can start exploring Spring Framework. Basic knowledge about web programming, servlets, and JSP, handling databases (JDBC), object relational mapping, JUnit, the reactive programming will be an advantage to understand the code. The prior knowledge of Spring will obviously be an added advantage to understand the changes that have taken place in Spring 5. The exposure of the Eclipse IDE is required as we will be using it throughout the book.

The book is designed in such a way that it will be helpful for both the beginners as well as the developers who are currently working with Spring-based application. Each chapter in the book starts with very basic things and slowly deep dives into the framework. The organization of the chapters will help even students of computer science who want to upgrade their skill with one of the most powerful frameworks in the market. The book covers the aspects involved in application development using Spring 5.

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning. Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows:

"If the bean class implements the DisposableBean interface, its destroy() method will get called."

A block of code is set as follows:

 public Demo_Custom_Init() {
   // TODO Auto-generated constructor stub
   System.out.println("constructor gets called
     for initializing data membersin Custom init");
   message="welcome!!!"; name="no name";
 } 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

public Demo_Custom_Init() {
  // TODO Auto-generated constructor stub
  System.out.println("constructor gets called
    for initializing data membersin Custom init");
message="welcome!!!"; name="no name";
}

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Click on the Show form to add new Book link"

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