What this book covers
Chapter 1, An Introduction to Reactive Programming, will introduce you to the
concept of reactive programming and will tell you why you should learn about it. This
chapter contains examples that demonstrate how RxJava incorporates the reactive
programming concept.
Chapter 2, Using the Functional Constructions of Java 8, will teach you how to use
the new lambda constructions of Java 8. It will explain some functional programming
concepts and will show you how to use them with RxJava in your reactive programs.
Chapter 3, Creating and Connecting Observables, Observers, and Subjects, will show
you the basic building blocks of the RxJava library called the Observables. You will
learn the difference between 'hot' and 'cold' Observables and how to subscribe to and
unsubscribe from them using a subscription instance.
Chapter 4, Transforming, Filtering, and Accumulating Your Data, will walk you
through the basic reactive operators, which you will learn how to use to achieve step-
by-step computations. This chapter will give you an idea of how to transform the events
the Observables emit, how to filter only the data we need, and how to group,
accumulate, and process it.
Chapter 5, Combinators, Conditionals, and Error Handling, will present you with
more complex reactive operators, which will allow you to master observable chaining.
You will learn about the combining and conditional operators and how the Observables
interact with each other. This chapter demonstrates the different approaches to error
handling.
Chapter 6, Using Concurrency and Parallelism with Schedulers, will guide you
through the process of writing concurrent and parallel programs with RxJava. This will
be accomplished by the RxJava Schedulers. The types of Schedulers will be introduced
and you will come to know when and why to use each one of them. This chapter will
present you with a mechanism that will show you how to avoid and apply backpressure.
Chapter 7, Testing Your RxJava Application, will show you how to unit test your
RxJava applications.
Chapter 8, Resource Management and Extending RxJava, will teach you how to
manage the resources used as data sources by your RxJava applications. We will write
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