RxJava is a Java VM implementation of Reactive Extensions: a library for composing asynchronous and event-based programs by using observable sequences. It extends the observer pattern to support ...

Exception io.reactivex.rxjava3.exceptions.UndeliverableException: at io.reactivex.rxjava3.plugins.RxJavaPlugins.onError (RxJavaPlugins.java:367) at io.reactivex ...

There are various instances of this issue that we get such as JAVAC’, JRE, ‘MVN’, JAR’ is not recognized as an internal or external command, operable program or batch file, ‘Java’ is not recognized as ...

On the day before Thanksgiving 2020, the Amazon Kinesis data streaming service in AWS' main region US-East-1 went down for several hours. The company explained the outage in its subsequent failure ...

To test out RxJava, we’ll write a command-line application that watches the public event stream developed by CoinCap. This event stream provides a WebSocket API, which is like a firehouse of ...

Functions are fundamental to code organization; they exist in all higher order programming languages. Generally, functional programming means using functions to the best effect for creating clean and ...

Upgrading to the latest release of a library is usually as simple as changing the version number in your dependency configuration, but for RxJava users, making the switch to RxJava 2.0 isn’t quite so ...

Reactor is a reactive streams library targeting Java 8 and providing an Rx-conforming API It uses the same approach and philosophy as RxJava despite some API differences It is a 4th generation ...