Java Lambdas and Parallel Streams

by Michael Müller

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 LearnMaster 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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104 pages, Kindle Edition

Published November 30, 2016

About the author

Father Michael Mueller, C.SS.R., was born in 1825 in Germany. He later joined the Congregation of the Most Holy Redeemer, and was one of eleven clerics sent to the United States by the American Redemptorist Provincial. Upon completion of his theology studies in Maryland, he was ordained in 1853 by John Nepomucene Neumann. He served the Redemptorist communities in the U.S. as Consulter to the Provincial, as well as Superior and Novice Master. Father Mueller is the author of The Blessed Eucharist, Prayer: The Key to Salvation, Triumph of the Blessed Sacrament, The Prodigal Son, and God the Teacher of Mankind. He died in 1899.

Reviews

[فاروق الفرشيشي · Rating 3 out of 5]

A good brief introduction to Lambda stream. Still, it doesn't go through everything about it. It explains a bit the mechanism of the Functional interfaces, Lambda expressions, Stream, Spliterator, ParallelStream and the main Stream operations such as filter, collect, reduce and map/flatMap. It uses one example through all the chapters, which adds elegance to the book. Only 90 pages, concise and clear. But it ends with many remaining questions in my head. To go in depth, one should read some other book.

[Harinee · Rating 3 out of 5]

Wanted more detail. I know he was trying to create a short and comprehensive introduction but some places needed more explanation, like the Java concurrency and collectors part.

[Miguel Veliz]

Very clear and rich of examples of code

[Alexis Willemyns · Rating 1 out of 5]

Ok, not easy to talk about this IT book. Well firstly that's a small book, it's only 65 pages (without annexes). You can read it easily in a few hours. So according to me, it's too short to explain lambda and streams. It's a kind of quick introduction to that topic, if you are looking for a detailed story about lambda and streams, don't buy it. Personally I don't get the interest of such books.