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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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Using the Stream API


A stream in Java is a sequence of functional definitions or scripts that work as a pipelined operation, wherein each of these definitions outputs another stream, creating a flow of stream operations expected to provide an end result. A stream is an outcome of a certain combination of functional interfaces, code reduction, and some lambda operations. It is also the first major attempt towards parallelizing some transactions in Java using internal multithreading. This recipe will highlight how to create Java streams from List, Set, and arrays of data.

Getting started

Open the same project ch06 and let us add service classes that will show us how to start creating java.util.stream.Stream from the given EmployeeDao transactions and test data.

How to do it...

There are few ways to create Java stream objects from a typical collection or array data store. To use the Stream API, do the following steps:

  1. Let us create an experimental service class, EmployeeStreamService, which consists...

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