RXJAVA
RxJava is a library for working with asynchronous code for the Java language. With its help, you can implement a functional reactive approach to ReactiveX programming. Using RxJava makes it possible to use observed sequences and events. Thanks to this, you can create asynchronous programs that can process many not necessarily related tasks simultaneously without blocking any of them. Simply put, with this technology, your application will be able to respond to user actions in real time.
RxJava is built on the principles of ReactiveX and is in many ways similar to other libraries of the same purpose. This makes it complex, because it is designed to solve specific tasks, but intuitive. RxJava allows you to flexibly configure asynchronous requests, switch operations between threads, convert data to them, and handle errors. At the same time, all these complex tasks require only a couple of lines of code.
RxJava is used to create asynchronous applications with observable sequences. It includes turnkey solutions for organizing low-level multithreading, synchronization, parallelization, and security. This library allows you to add your own operators and compose them, declaratively declare functional transformations, convert data types, and much more. In addition to the basic development tools, the library has testing and diagnostic modules. All this makes it extremely flexible and a good choice for creating large-scale asynchronous applications.
RxJava helps applications perform better at different stages. For example, it can handle simple UI events when a user hovers the mouse over an object or clicks a button. The library is also suitable for property change events, for example, to instantly notify you of the successful completion of registration or another task. In addition, RxJava can be used to process infrastructure events, notifications from the WebSocket API, and organize other integrations.
RxJava is a library for working with asynchronous code, which is useful when you have a lot of such code. Android developers will tell you if you need to use RxJava as soon as you tell them what your application needs to do. In the simplest projects, you can do without this library, and in some cases, use other tools to implement asynchronous event processing. However, RxJava is the standard for implementing ReactiveX principles in Android.
The library has everything you need to elegantly solve complex problems. It allows you to simply manage asynchronous observable sequences, significantly reducing the amount of code required. Thanks to this, your application will be lightweight and productive, and will be able to instantly respond to any events from the user or other sources.