Define "enabled" in ScheduledExecutorService

[Pavel Rappo]

I've recently re-read documentation for ScheduledExecutorService. I
noticed that the documentation uses the term "enabled", but does not
define it. The semantics of the term feels almost intuitive, but not
quite.

To check my intuitions, I searched through the package documentation
and source comments. I found usages of "enabled" in similar context of
the time-scheduled task execution. Some of those usages are
descriptions that are close to a proper definition. However, those
descriptions are scattered through implementations of
SchedulledExecutorService.

I wonder if it makes sense to properly define "enable"/"enabled" in
SchedulledExecutorService.

-Pavel