Book Image

Kotlin for Enterprise Applications using Java EE

By : Raghavendra Rao K
Book Image

Kotlin for Enterprise Applications using Java EE

By: Raghavendra Rao K

Overview of this book

Kotlin was developed with a view to solving programmers’ difficulties and operational challenges. This book guides you in making Kotlin and Java EE work in unison to build enterprise-grade applications. Together, they can be used to create services of any size with just a few lines of code and let you focus on the business logic. Kotlin for Enterprise Applications using Java EE begins with a brief tour of Kotlin and helps you understand what makes it a popular and reasonable choice of programming language for application development, followed by its incorporation in the Java EE platform. We will then learn how to build applications using the Java Persistence API (JPA) and Enterprise JavaBeans (EJB), as well as develop RESTful web services and MicroServices. As we work our way through the chapters, we’ll use various performance improvement and monitoring tools for your application and see how they optimize real-world applications. At each step along the way, we will see how easy it is to develop enterprise applications in Kotlin. By the end of this book, we will have learned design patterns and how to implement them using Kotlin.

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Table of Contents (13 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Kotlin – A First look
Kotlin – A First look
Technical requirements
Introduction to Kotlin
A quick tour of Kotlin
Lambda expressions in Kotlin
Extension functions
Classes in Kotlin
Kotlin programming style and Syntax
Summary
2
Kotlin – The Game Changer
Kotlin – The Game Changer
Technical requirements
Why Kotlin is the game changer
Kotlin versus Java
Configuring Kotlin in the project
Working with coroutines
Using Kotlin with Java
Summary
3
An Overview of Java EE and Kotlin
An Overview of Java EE and Kotlin
Technical requirements
Overview of Java EE
Summary
4
Kotlin with JSF and CDI
Kotlin with JSF and CDI
Technical requirements
Introduction to JSF
JSF architecture
Developing our first JSF application
Kotlin and CDI
Producers
Qualifiers
Interceptors
Summary
5
Kotlin with JPA and EJB
Kotlin with JPA and EJB
Technical requirements
Kotlin Data Classes
Java Persistence API
Modeling JPA entities
Transactions
Exception handling
Using JPA in an application
Summary
6
Enterprise Messaging with Kotlin
Enterprise Messaging with Kotlin
Technical requirements
Understanding the messaging domains
Messaging queues and topics
Building a messaging service using Kotlin
Message acknowledgement
Transactions
Summary
7
Developing RESTful Services with JAX-RS
Developing RESTful Services with JAX-RS
Technical requirements
Web services
Understanding REST verbs
Introduction to JAX-RS
Implementing a RESTful service using Jersey
Implementing Real-World RESTful Web Services
Summary
8
Securing JAVA EE Applications with Kotlin
Securing JAVA EE Applications with Kotlin
Technical requirements
Introduction to security API
The IdentityStore mechanism
HttpAuthenticationMechanism
Implementing security API using Kotlin
Securing JAX-RS APIs with JWT
Summary
9
Implementing Microservices with Kotlin
Implementing Microservices with Kotlin
Technical requirements
Introduction to microservices
Breaking the monolith into microservices
Developing real-world microservices
Writing test code for microservices
Summary
10
Performance Monitoring and Logging
Performance Monitoring and Logging
Technical requirements
Finding Memory Leaks
Application monitoring
Garbage collection
Profiling
Getting our real-world application production-ready
Summary
11
Design Patterns with Kotlin
Design Patterns with Kotlin
Technical requirements
Design patterns
Categorizing design patterns
Implementing the singleton pattern
Implementing the factory pattern
Implementing the builder pattern
Implementing the decorator pattern
Implementing the observer pattern
Implementing the chain of responsibility pattern
Selecting design patterns
Summary
12
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Who this book is for

This book is designed for programmers, application developers, architects, and technical managers. It assumes a degree of familiarity with the fundamentals of the programming and basics of Java and JDK in general, but does not assume any knowledge of the Kotlin language.

For application developers and architects, this book covers the various aspects of developing enterprise applications. It covers the fundamentals of the Kotlin language required to get started with this book and goes on to discuss various aspects for developing enterprise applications. The book can be used as a reference guide for developing enterprise applications using Kotlin and Java EE, with elegant and expressive syntax that the Kotlin language offers.

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