Cancellable Tasks in Java: Understanding the Concept and Best Practices

Cancellable is a property of a task that allows you to cancel the task. If a task is cancellable, you can call the `cancel()` method on it to stop the task from running.

For example, if you have a long-running task that is doing some computation, you might want to allow the user to cancel the task if they realize that it's taking too long or if they change their mind about what they want to do. In this case, you would set the task to be cancellable and then check the `isCancelled()` method periodically during the execution of the task to see if it has been cancelled. If it has been cancelled, you would stop the task from running.

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