Can you list the types of execution threads used in RxJava?

RxJava uses different types of streams (Schedulers) to control which thread operations are performed on:

• Schedulers.io() — for input/output operations (network requests, file handling). Uses a thread pool that can expand as needed.

• Schedulers.computation() — for computational tasks, uses a fixed thread pool equal to the number of processor cores.

• Schedulers.newThread() — creates a new thread for each task.

• Schedulers.single() — uses a single thread for sequential task execution.

• AndroidSchedulers.mainThread() (in Android) — for executing operations on the main (UI) thread.

Example usage:

Observable.just("data")
    .subscribeOn(Schedulers.io())
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe(data -> {
        // handle on UI thread
    });