Book Image

Java 9 Programming By Example

By : Peter Verhas
Book Image

Java 9 Programming By Example

By: Peter Verhas

Overview of this book

This book gets you started with essential software development easily and quickly, guiding you through Java’s different facets. By adopting this approach, you can bridge the gap between learning and doing immediately. You will learn the new features of Java 9 quickly and experience a simple and powerful approach to software development. You will be able to use the Java runtime tools, understand the Java environment, and create Java programs. We then cover more simple examples to build your foundation before diving to some complex data structure problems that will solidify your Java 9 skills. With a special focus on modularity and HTTP 2.0, this book will guide you to get employed as a top notch Java developer. By the end of the book, you will have a firm foundation to continue your journey towards becoming a professional Java developer.
Table of Contents (17 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Audit logging and AOP


We have logging in our sample code and for that we use slf4j, which we covered in the previous chapter. Logging is more or less the decision of the developer and supports technical levels of operation. There, we also touched on a few sentence audit loggings. This type of logging is usually explicitly required in a functional requirement.

Generally, AOP is separating the different aspects of code functionality into separate code fragments, and implementing them independent of each other. This is very much the single responsibility principle. This time, it is implemented in a way that not only the different functionalities are implemented separately but also how we connect them together is defined separately. What is executed before and after what other parts are encoded separately gets to the Spring configuration. We have seen something similar already. The dependencies that a class needs to properly operate are defined in a separate segment (XML or Java code). It is...