What methods of multithreading, besides coroutines, do you know and have used in your projects?

In addition to coroutines, the following methods are used in Android development for multithreading:

• Thread — a classic way to create and manage threads.
• Handler and Looper — for processing messages and executing tasks in a specific thread.
• AsyncTask (deprecated, but still occasionally used) — for executing background tasks with UI updates.
• Executor and ThreadPoolExecutor — for managing thread pools and executing tasks asynchronously.
• RxJava — a library for reactive programming, allowing convenient work with asynchronous data streams.

Example of creating a thread using Thread:

Thread {
    // Background work
    val result = doHeavyWork()
    runOnUiThread {
        // UI update
        textView.text = result
    }
}.start()