RxJava

Lesson in the Android Developer Roadmap · Stage 11: Common Services

Last updated 14 September 2026

What is RxJava?

RxJava, standing for Reactive Extensions for the JVM, is a library in the Java and Android ecosystem that allows developers to write asynchronous, event-based programs. It is developed according to reactive programming principles and it supports multi-threading operations. One can create data streams from just about anything - variables, data structures, inputs, etc. and these streams could be used with functional programming methods to process the data.

Study this in the interactive course See the whole Android roadmap

Free resources to learn RxJava

Open sourceRxJava on GitHub

RxJava: common questions

Can I learn RxJava in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain RxJava in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this RxJava tutorial for beginners?

It is lesson 93 of 113 in the free Android roadmap, in stage 11, Common Services. If you are new to Android, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.