RxJava 2: Reactive Programming in Java

Course Objectives

RxJava 2: Reactive Programming in Java focuses on providing an understanding of the fundamental principles and technologies that are used in reactive programming.  This understanding is critical to being able to diagnose, troubleshoot, tune, and perform other lifecycle activities.

Working in an engaging hands-on programming environment, students will:

• Understand the basics of Reactive Programming
• Discuss the advantages and limitations of RxJava Observables
• Write a client application capable of handling Reactive events
• Develop unit tests to properly test Observable implementations (Using JUnit 5)
• Apply operators to event streams to filter, modify and combine the objects emitted by event publishers
• Select the appropriate type of Event Source (Single, Maybe, Completable, Observable and Flowable)
• Implement event sources using one of the many factory methods of the RxJava 2 API
• Use Subjects, acting as both event consumers and event source
• Use both Cold and Hot Observables
• Work with RxJava Scheduler instances to defines the thread pools on which event producers and consumers operate
• Properly divide the functionality over multiple threads
• Write test classes that deal with asynchronous RxJava implementations
• Deal with backpressure problems in reactive programming
• Solve the problem of with slow event consumers
• Implement alternatives to event caching
• Deal with exceptions in Reactive streams
• Retry registration to event streams in Exceptional situations

Need different skills or topics?  If your team requires different topics or tools, additional skills or custom approach, this course may be further adjusted to accommodate.  We offer additional Java, JEE and Java for Web application development, design, testing, services, application security and other related topics that may be blended with this course for a track that best suits your needs. Our team will collaborate with you to understand your needs and will target the course to focus on your specific learning objectives and goals.

Course Prerequisites

This in an intermediate-level development course geared for experienced Java developers who wish to explore concurrent, asynchronous and reactive programming APIs and techniques in Java.

Follow-On Courses / Take After: Our core Java training courses provide students with a solid foundation for continued learning based on role, goals, or their areas of specialty.  Our Java developer learning paths offer a wide variety of follow-on courses such as:

• Continued Java & JEE training: Intermediate to Advanced Java, JEE Essentials, Java for Web, Spring / Spring Boot, Microservices / Web Services / REST, Reactive Java Programming / RxJava, Tuning & Performance, Design Patterns & More
• TDD / Test Driven Development, JUnit / Unit Testing, Agile development training
• Secure Java Coding / Java Security and secure application development training
• Mobile developer / Android training

Please see the Related Courses tab for specific Pre-Requisite courses, Related Courses or Follow On training options. Our team will be happy to help you with recommendations for next steps in your Learning Journey.

Course Agenda

Course Materials

Course Materials: Each participant will receive a Student Guide with course notes, code samples, software tutorials, step-by-step written lab instructions, diagrams and related reference materials and resource links. Students will also receive the project files (or code, if applicable) and solutions required for the hands-on work.

Hands-On Setup Made Simple! Our dedicated tech team will work with you to ensure our ‘easy-access’ cloud-based course environment is accessible, fully-tested and verified as ready to go well in advance of the course start date, ensuring a smooth start to class and effective learning experience for all participants. Please inquire for details and options.