Modern Java in Action

Chapter 17. Reactive programming

This chapter covers

• Defining reactive programming and discussing the principles of the Reactive Manifesto
• Reactive programming at the application and system levels
• Showing example code using reactive streams and the Java 9 Flow API
• Introducing RxJava, a widely used reactive library
• Exploring the RxJava operations to transform and combine multiple reactive streams
• Presenting marble diagrams that visually document operations on reactive streams

Before we dig into what reactive programming is and how it works, it’s helpful to clarify why this new paradigm is of growing importance. A few years ago, the largest ...