crontrigger - How to trigger events in java at specific date and time? -


i need send sms few mobile nos @ specific date , time. e.g. have list of dates , times , list of corresponding mobile nos. below.

date                mobile 10th april 9     1234567890 10th april 11    9987123456,9987123457 11th april 3.30 pm  9987123456

and on.

i know, java has cron schedulers can run @ specific schedule.

http://www.quartz-scheduler.org/documentation/quartz-2.x/tutorials/crontrigger.html

i can run job can keep on checking time , if current time matches time in above list, send sms.

but in case have keep on checking time.

is there way, can fire events/sms directly @ given time. registering jobs each of date time , firing @ time instead of having job runs continuously check date times ?

you can use scheduledexecutorservice. see tutorial.

 private class smssendertask implement runnable {      private string text;      private list<string> phonenumbers;       public void run() {          (string number : phonenumbers) {              sendsms(number, text);          }      } }  scheduledexecutorservice service = executors.newscheduledthreadpool(1); (date d : dates) {     long millis = d.gettime() - system.currenttimemillis();     service.schedule(new smssendertask(text, phonenumbers), millis, timeunit.milliseconds); }

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