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Spring 5.0 Cookbook

Spring 5.0 Cookbook

By : Sherwin John C. Tragura
3.5 (2)
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Spring 5.0 Cookbook

Spring 5.0 Cookbook

3.5 (2)
By: Sherwin John C. Tragura

Overview of this book

The Spring framework has been the go-to framework for Java developers for quite some time. It enhances modularity, provides more readable code, and enables the developer to focus on developing the application while the underlying framework takes care of transaction APIs, remote APIs, JMX APIs, and JMS APIs. The upcoming version of the Spring Framework has a lot to offer, above and beyond the platform upgrade to Java 9, and this book will show you all you need to know to overcome common to advanced problems you might face. Each recipe will showcase some old and new issues and solutions, right from configuring Spring 5.0 container to testing its components. Most importantly, the book will highlight concurrent processes, asynchronous MVC and reactive programming using Reactor Core APIs. Aside from the core components, this book will also include integration of third-party technologies that are mostly needed in building enterprise applications. By the end of the book, the reader will not only be well versed with the essential concepts of Spring, but will also have mastered its latest features in a solution-oriented manner.
Table of Contents (14 chapters)
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Applying method and constructor references


Some of the lambda expressions can be simplified using some valid short-hand forms, given that a certain method or keyword can satisfy the implementation of the concerned functional interfaces. Instead of writing the full-blown expressions with the parameters and curly braces, we intend to reduce lambda expression as much as possible to apply the principles of functional programming. This recipe will highlight how to optimize a lambda expression used in object instantiation and method calls.

Getting started

Open the same project, ch06, and let us implement service classes that utilize built-in functional interfaces using method and constructor references.

How to do it...

To illustrate the use of method and constructor references, follow these steps:

  1. Create a service implementation named EmployeeDataService, which will provide instances of empty Employee instances and a zero-sized ArrayList object for a list of employees. Also, it has a method that converts...

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