Chapter 1, Thread Management, teaches you how to make basic operations with threads. The creation, execution, and status management of threads are explained through basic examples.

Chapter 2, Basic Thread Synchronization, covers how to use low-level Java mechanisms to synchronize code. Locks and the synchronized keyword are explained in detail.

Chapter 3, Thread Synchronization Utilities, teaches how to use the high-level utilities of Java to manage the synchronization between threads in Java. It includes an explanation of how to use the Phaser class to synchronize tasks divided into phases.

Chapter 4, Thread Executors, explores the delegation of thread management to executors. They allow running, managing, and getting the results of concurrent tasks.

Chapter 5, Fork/Join Framework, covers the use of the Fork/Join framework. It’s a special kind of executor oriented to execute tasks that will be divided into smaller ones using the divide and conquer technique.

Chapter 6, Parallel and Reactive Streams, teaches you how to create streams and use all its intermediate and terminal operations to process big collections of data in a parallel and functional way. Streams were introduced in Java 8. Java 9 has included some new interfaces to implement reactive streams.

Chapter 7, Concurrent Collections, explains how to use some concurrent data structures provided by the Java language. These data structures must be used in concurrent programs to avoid the use of synchronized blocks of code in their implementation.

Chapter 8, Customizing Concurrency Classes, teaches you how to adapt some of the most useful classes of the Java concurrency API to your needs.

Chapter 9, Testing Concurrent Applications, covers how to obtain information about the status of some of the most useful structures of the Java 7 concurrency API. You will also learn how to use some free tools to debug concurrent applications, such as the Eclipse, NetBeans IDE, or FindBugs applications to detect possible bugs in your applications.

Chapter 10, Additional Information, explores the notions of synchronization, the executor, the Fork/Join framework, concurrent data structures, and the monitoring of concurrent objects, which were not included in the respective chapters.

Chapter 11, Concurrent Programming Design, provides some tips that every programmer should consider when they develop a concurrent application.

To follow this book, you need some basic knowledge of the Java programming language. You should know how to use an IDE, such as Eclipse or NetBeans, but this is not a necessary prerequisite.

If you are a Java developer interested in enhancing your knowledge of concurrent programming and multithreading further, as well as discovering the new concurrency features of Java 8 and Java 9, then the Java 9 Concurrency Cookbook is for you. You should already be comfortable with general Java development practices, and a basic grasp of threads would be an advantage.

In this book, you will find several headings that appear frequently (Getting ready, How to do it, How it works, There's more, and See also).

To give clear instructions on how to complete a recipe, we use these sections as follows:

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The one that executes the main() method."

A block of code is set as follows:

Thread task=new PrimeGenerator(); 
task.start(); 

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Create a new project by clicking on the New Project option under the File menu"

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