Scheduling Pls Help

Hai
I want to update a database on a daily basis using java at some predefined times of the day. is this possible? What i am looking at is some kind of a cron job like facility like in linux.
Thanks
Bye

just a idea,
have a cron runs a shell script which runs java program.
or just have a perl or shell script do it directly.

For any UNIX system you can write a cron job as specifed in the previous reply. If u use windows NT then create a new scheduled task to invoke a batch file which invokes Java.
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Shubhrajit

Thanks!
But i want to do it from java so that i need not depend on the facility given by the platform like NT or linux. if i can do it in java no matter waht the platform it will work!!. So i specifically need it in java.
Bye

Of course you can do this, and event handling is the way to do it. Think about it this way: you have a Cron object (hey why not, the word's not copyrighted) that will tell other objects when a time they have expressed interest in comes around. When it happens, the Cron class creates a TimedEvent object, and sends it as a parameter to a Listener that knows what job needs to be performed.
For a task like this you don't really need OS services. Your VM does, of course, but that's already built into it.
Is that enough to go on?
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Michael Ernest, co-author of: The Complete Java 2 Certification Study Guide

Thanks
I think i can work on that idea. Is there any useful jars that can do all this kind of things?
Thanks

Allen,
JDK1.3 exposes couple of classes java.util.Timer and java.util.TimerTask that actually does the job of Scheduling (It is rudimentary thread based implementation). It is pretty simple to build a robust client around Timer and TimerTask.
Hope this helps.
Chidda