Book Image

Java 9 Dependency Injection

By : Nilang Patel, Krunal Patel
Book Image

Java 9 Dependency Injection

By: Nilang Patel, Krunal Patel

Overview of this book

Dependency Injection (DI) is a design pattern that allows us to remove the hard-coded dependencies and make our application loosely coupled, extendable, and maintainable. We can implement DI to move the dependency resolution from compile-time to runtime. This book will be your one stop guide to write loosely coupled code using the latest features of Java 9 with frameworks such as Spring 5 and Google Guice. We begin by explaining what DI is and teaching you about IoC containers. Then you’ll learn about object compositions and their role in DI. You’ll find out how to build a modular application and learn how to use DI to focus your efforts on the business logic unique to your application and let the framework handle the infrastructure work to put it all together. Moving on, you’ll gain knowledge of Java 9’s new features and modular framework and how DI works in Java 9. Next, we’ll explore Spring and Guice, the popular frameworks for DI. You’ll see how to define injection keys and configure them at the framework-specific level. After that, you’ll find out about the different types of scopes available in both popular frameworks. You’ll see how to manage dependency of cross-cutting concerns while writing applications through aspect-oriented programming. Towards the end, you’ll learn to integrate any third-party library in your DI-enabled application and explore common pitfalls and recommendations to build a solid application with the help of best practices, patterns, and anti-patterns in DI.
Table of Contents (14 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Contributors

About the authors

Krunal Patel has been working at Liferay Portal for over 5 years and has over 9 years of experience in enterprise application development using Java and Java EE technologies. He has worked in various domains, such as healthcare, hospitality, and enterprise intranet.

He was awarded an ITIL® Foundation Certificate in IT Service Management in 2015, a Liferay 6.1 Developer Certification in 2013, and a MongoDB for Java Developers certificate in 2013.

He has reviewed Mastering Apache Solr 7.x by Packt Publishing.

I would like to thank my loving wife Jigna, son Dirgh, father Maheshbhai, mother Sudhaben, brother Niraj, sister-in-law Krishna, and niece Risha, for supporting me throughout the course of writing this book. Thanks also to KNOWARTH, my coauthor and the Packt team, especially Anugraha and Peter Verhas, for their insightful comments.

 

 

 

Nilang Patel has over 14 years of core IT experience in leading project, software design and development, and supporting enterprise applications using enterprise Java technologies.

He is experienced in core Java/J2EE based application and has experience in healthcare, human resource, taxation, intranet application, energy and risk management domain. He contributes to various forums and has a personal blog.

He acquired the Liferay 6.1 Developer Certification in 2013, Brainbench Java 6 certification in 2012, and a Sun Certified Programmer for the Java 2 Platform 1.5 (SCJP) in 2007.

With the divine blessings of Bhagwan Swaminarayan and my guru HH Pramukh Swami Maharaj and Mahant Swami Maharaj, I, Nilang could accomplish such a wonderful milestone. I am equally thankful to all reviewers at Packt. I would like to express my deep gratitude to my wife Komal and my daughters Bhakti and Harmi for making all possible adjustments and for their support.

About the reviewer

Peter Verhas is a senior software engineer and software architect with a background in electrical engineering and economics. He gained an MSc from TU Budapest and an MBA from PTE Hungary, and studied at TU Delft and TU Vienna too. He created his first programs in 1979, and since then, he has authored several open source programs.

Peter now works for EPAM Systems in Switzerland, participating in software development projects at various customer sites. He also supports talent acquisition, interviewing candidates, and designing internal mentoring and training programs for developers.

 

 

 

 

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