RizzoWeb.com - Java Alarm/Scheduler

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AlarmClock/Scheduler Framework

Alarm Clock / Scheduler

I have found the need for some kind of scheduled task management in many projects I've worked on. Here is a reasonably flexible framework for scheduling tasks to be performed at specified times, with the option of making them recurring (repeating). It includes several useful extension points:

an interface for being notified when an alarm triggers
a flexible, extensible Schedule object for specifying when alarms should trigger
and an abstract Task object for performing the actual work that needs to be scheduled.

The framework provides some default implementations of these as well as a threaded management component that handles triggering of alarm tasks at the proper time(s). It is very easy to use (examples are included in the form of the AlarmTest class): just create instances of AlarmTask and add them to an AlarmManager, associated with an AlarmSchedule.

Important credit: I adapted this code from an open-source package I downloaded severl years ago called JDRing. I have not recently been able to find the original source web site of JDRing, so I am releasing this modified (improved & cleaned-up, hopefully :-) version into the wild in case it is useful to anyone.
Since it has been a year or more since I've used it, there may be places where it shows its age (more like my level of experience at the time I wrote it). If you have any questions on how to use it or ideas on how to improve it, feel free to email me.

This code is provided as-is, with no warranty expressed or implied.

Download alarm.zip (source code included)