Running Java program at regular intervals

I need to run a Java 开发者_StackOverflowprogram periodically say once ever 2 hours. How do I do this in Linux(Ubuntu)?

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You should add an entry to crontab:

0 */2 * * * script.sh

In script.sh you should have something like:

#! /bin/sh
java -jar <your jar file>

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how about a cron-job ?

Cron is a system daemon used to execute desired tasks (in the background) at designated times.

More information can be found by typing in Ubuntu:

man crontab

or here

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Use cron.

https://help.ubuntu.com/community/CronHowto

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Use a cronjob.

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Cron: http://en.wikipedia.org/wiki/Cron

Will let you launch your Java task at a set interval.

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For a nice interface to cron you can use:

sudo apt-get install gnome-schedule

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A pure Java solution would use Quartz. That'll work on any operating system. It'll have the added advantage of allowing you to send alert e-mails if an exception is caught. It'll fit nicely into your logging/monitoring framework.