Extension of the Runnable interface, adding special callbacks for long-running operations.
TaskExecutor extension exposing
scheduling characteristics that are relevant to potential task submitters.
Task scheduler interface that abstracts the scheduling of
Runnables based on different kinds of triggers.
Common interface for trigger objects that determine the next execution time of a task that they get associated with.
Context object encapsulating last execution times and last completion time of a given task.
General exception to be thrown on scheduling failures, such as the scheduler already having shut down.