June 2004
Intermediate to advanced
1568 pages
30h 33m
English
book
The J2EE™ Tutorial Second Edition
by Stephanie Bodoff, Eric Armstrong, Jennifer Ball, Debbie Bode Carson, Ian Evans, Dale Green, Kim Haase, Eric Jendrock
Content preview from The J2EE™ Tutorial Second Edition
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Registering a Custom Validator
If the application developer provides an implementation of the Validator interface to perform the validation, you must register this custom validator in the application configuration resource file by using the validator XML element:
<validator>
...
<validator-id>FormatValidator</validator-id>
<validator-class>
validators.FormatValidator
</validator-class>
<attribute>
...
<attribute-name>formatPatterns</attribute-name>
<attribute-class>java.lang.String</attribute-class>
</attribute>
</validator>
The validator-id and validator-class elements are required subelements. The validator-id represents the identifier under which the Validator class should be registered. This ID is used by the tag class corresponding to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.