java timers

Hi. I was instructed about running a program on a schedule. I was told that I could  "use Timer and TimeTask classes or ExctutoThreadPool. ....can also download and use java Quartz library" or I can use the scheduler on Windows.

I need to run this at most 30 times a day. Each time during the day it would be on a different class but the classes would have almost identical code except for one or two lines. But I do not want to run it on Fridays or Saturdays and also on about 12 different holidays during the year.

If I use the scheduler I guess I could set it for Sunday thru Thursday but I would have to remember to cancel it on the holidays.

In this case can I get an opinion again on which would be best?
Thank you.
onyourmarkAsked:
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for_yanCommented:
why is it so important not to run it on holidays?
what happens if it does rtun?

It seems to be rather tricky to do no matter how you do it
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for_yanCommented:
Maybe you would include in the Java code of your task that it would check within the code
that if it is holiday it will exit
And holidays you can provide as arraylist of dates

There are also Java libraries which calculate holidays by country especially when they are moving
holidays
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for_yanCommented:
check this questions and answers there:
http://stackoverflow.com/questions/1044921/a-good-business-calendar-library-in-java

still I'd go there if there is a very good reson not to run it on holidays
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onyourmarkAuthor Commented:
Hi. I think this is a great idea. If it is a holiday then I will do something special in the code. That is great. Thanks.
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onyourmarkAuthor Commented:
thanks!
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for_yanCommented:
You are always welcome.
Indeed, it looks like it is easier to do it in your code, than to seek out this "holiday" functionality in any of schedulers/libraries
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