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By mitchp
via java.dzone.com
Published: Oct 31 2012 / 10:24

Declaring complex Cron expressions is still giving me some headaches, especially when some more advanced constructs are used. After all, can you tell when the following trigger will fire "0 0 17 L-3W 6-9 ? *"? Since triggers are often meant to run far in the future, it's desired to test them beforehand and make sure they will actually fire when we think they will.
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