What is a Task in Java?

Question

Java supports application to run asynchronous tasks through various mechanisms, what exactly is a task? JavaDocs: https://docs.oracle.com/javase/tutorial/essential/concurrency/index.html

Answer 1

Task is just a unit of work in the abstract sense. You have tasks of some type, and then you have mechanisms to perform those tasks in an asynchronous way.

A simple example would be instances of Runnable or Callable (or even FutureTask if you want to have the name "task" in it) for the tasks, and an ExecutorService to run them.