Do you have experience working with the RxJava library for reactive programming?

RxJava is a library for reactive programming in Java and Android that allows working with asynchronous data streams and events.

Experience with RxJava typically includes:

• Creating Observables or Flowables for data emission.
• Applying transformation, filtering, merging operators, etc.
• Managing threads with Schedulers to switch between UI and background threads.
• Error handling and subscription lifecycle management.

Example of a simple Observable in RxJava:

Observable.just("Hello", "RxJava")
    .map(String::toUpperCase)
    .subscribe(System.out::println);

RxJava is widely used in Android to simplify working with asynchrony, network requests, and UI events.