Book Image

Java 9 Concurrency Cookbook, Second Edition - Second Edition

By : Javier Fernández González
Book Image

Java 9 Concurrency Cookbook, Second Edition - Second Edition

By: Javier Fernández González

Overview of this book

Writing concurrent and parallel programming applications is an integral skill for any Java programmer. Java 9 comes with a host of fantastic features, including significant performance improvements and new APIs. This book will take you through all the new APIs, showing you how to build parallel and multi-threaded applications. The book covers all the elements of the Java Concurrency API, with essential recipes that will help you take advantage of the exciting new capabilities. You will learn how to use parallel and reactive streams to process massive data sets. Next, you will move on to create streams and use all their intermediate and terminal operations to process big collections of data in a parallel and functional way. Further, you’ll discover a whole range of recipes for almost everything, such as thread management, synchronization, executors, parallel and reactive streams, and many more. At the end of the book, you will learn how to obtain information about the status of some of the most useful components of the Java Concurrency API and how to test concurrent applications using different tools.
Table of Contents (12 chapters)

Using blocking thread-safe deques

The most basic collection is referred to as a list. A list has an unlimited number of elements, and you can add, read, or remove an element from any position. A concurrent list allows various threads to add or remove elements from the list at a time without producing any data inconsistency. Similar to lists, we have deques. A deque is a data structure similar to a queue, but in a deque, you can add or remove elements from either the front (head) or back (tail).

In this recipe, you will learn how to use blocking deques in your concurrent programs. The main difference between blocking deques and non-blocking deques is that blocking deques have methods to insert and delete elements that, if not done immediately because the list is either full or empty, block the thread that make the call until the operation could be carried out. Java includes the LinkedBlockingDeque class that implements...