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This compact book introduces the concepts of Java lambdas and parallel streams in a concise form. It begins by introducing new supporting features such as functional interfaces, default methods and more. After this, the author demonstrates how streams can be parallelized in a very simple way-within certain limits, no knowledge about the thread management is needed. Nevertheless, some basic elements in the context of parallelism need to be considered. Here, the book provides a variety of information and best practices.
What You Will Learn

Master lambdas and streams

Work with the default method

Harness streams and the stream() function

Use Stream and Spliterator

Take advantage of parallel streams

Work with collectors and concurrency
Who This Book Is For
Experienced Java programmers and developers.
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1. Inroduction 1.1 Lambdas and (Parallel) Streams 1.2 The challenge 1.3 The solution 1.4 A first explanation 2. The data 3. First analysis - from naive to flexible 3.1 Fix filter 3.2 Simple parameterization 3.3 Behavior parameterization 3.4 Anonymous classes 4. Lambda expressions 4.1 Functional interface 4.2 Lambda notation 4.3 Lazy evaluation 4.4 Summary 5. Default method 5.1 The problem 5.2 Solution - The Java way 5.3 Rules to choose a default method 5.4 Summary 6. Optional 7. Make the acquaintance of Streams 7.1 Examples 7.2 Parallel processing 7.3 Summary 8. stream(), Stream and Spliterator 8.1 Stream 8.2 Spliterator 8.3 Summary 9. Parallel Stream 9.1 Summary 10. Collector and Concurrency 10.1 Java concurrency 10.2 Collect 10.3 Summary 11. Additional chapters Appendix Program to create the demo data Basic data Article Persons Other classes Demo program Notes

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Michael Müller is an IT professional with more than 30 years of experience including about 25 years in the healthcare sector. During this time, he has worked in different areas, especially project and product management, consulting, and software development. During a couple of Software development project, he also could gain intensive international experience.
Currently, he is the head of software development at the German DRG institute inek.org. In this role, he is responsible for Web applications as well as other Java and .NET projects. Web projects are preferably built with Java technologies such as JSF with the help of supporting languages like JavaScript.
Michael has a strong experience using lambda statements the .Net environment (LINQ with C#). Beginning with Java 8, he finally can use similar powerful features with Java.
Michael is a JSF professional user and a member of the JSR 344 and JSR 372 (JSF) expert groups. His first book Web Development with Java and JSF consequential deals with this Java web technology.
He frequently reads books and writes reviews as well as technical papers, which are mostly published in German-printed magazines and on his website.

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