Introduction to RxJava Flowable

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Introduction: RxJava is a popular reactive programming library that brings the concept of Observables and Observers to the Java language. Flowable is an extension of the Observable class in RxJava that is specifically designed to handle backpressure, which occurs when the rate at which data is emitted is faster than the rate at which it can be consumed. In this blog post, we will explore the basics of RxJava Flowable and how it can be used.

What is a Flowable? A Flowable is similar to an Observable in that it represents a stream of data or events that can be observed and processed by Observers. However, Flowable adds the ability to handle backpressure, which is crucial when dealing with large amounts of data or slow consumers. Backpressure refers to the mechanism of controlling the flow of data so that the consumer can process it at its own pace, avoiding overwhelming or dropping data.

Creating a Flowable: Flowables can be created in a similar way to Observables. Here are a few common methods:

1. Create: The Flowable.create() method allows you to manually create a Flowable. Within the create() method, you define the logic for emitting items to the Observers. For example:

Flowable<String> flowable = Flowable.create(emitter -> {
    emitter.onNext("Hello");
    emitter.onNext("World");
    emitter.onComplete();
}…