May 2001
Intermediate to advanced
1088 pages
30h 13m
English
Content preview from Special Edition Using Java™ 2 Enterprise EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Conditional Includes Using Custom Tags
Back in Listing 16.17, you saw that the doStartTag method in the custom tag returns a value of SKIP_BODY and the doEndTag method returns a value of EVAL_PAGE. These values tell the JSP engine how to handle the content between the start and end of the custom tag, and also whether to continue evaluating the rest of the page after the custom closing tag. When doStartTag returns SKIP_BODY, it tells the JSP engine to ignore the content between the start and end of the custom tag. If the doStartTag returns EVAL_BODY_INCLUDE, the data between the start and end tags is copied to the response and any nested tags are evaluated.
When doEndTag returns EVAL_PAGE, it tells the JSP engine to continue evaluating the rest ...
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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.