Gain insights into RxJava's principles, explore its integration into Android, and discover why it’s the leading reactive library for enhanced app development.

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RxJava

Since its inception in 2012, RxJava has slowly gained in popularity for enabling reactive programming on Android. It is now deemed as the go-to and leading reactive library. Many companies have adopted the reactive way of programming, including Google, with its release of Android Architecture Components, which has many reactive elements in its design.

In this course, you will learn the fundamental principles of RxJava which will serve as a foundation for experienced Android developers who are new to the library and want to start integrating it into their apps.

Reactive Programming with RxJava

# Transforming and filtering

Operators that transform or filter are some of the handiest operators that are available because they do not require timing or buffering. The operations are applied as soon as a new element is produced in the stream. 

In the [previous chapter](https://www.educative.io/courses/reactive-programming-rxjava/streams), we looked at `map` and `filter` to apply a simple transformation and filtering of data. The following marble diagrams demonstrate how each one affects emitted items before they are propagated to subscribers.


Learn about transforming and filtering operators, such as map and filter.


Transform: Map and Filter

Learn about transforming and filtering operators, such as map and filter.

Getting Started

Part 1: RxJava Basics

Reactive Programming

RxJava Core Components

Operators

Multithreading

Part 2: RxJava Advanced

Reactive Modeling on Android

Backpressure

Error Handling

Conclusion

Transform: Map and Filter

Transforming and filtering