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Now let's go that next step and take a serious look at Java metadata.hi, i have created a form in html, with several input boxes where they enter numbers (currency).With the popularity of XDoclet, I'm surprised framework developers aren't more committed to providing annotation support in their future releases.
By modifying some of the code we wrote for the validation framework in this article, you could incorporate the concept of a into validation processing.
This would allow programmers to declare validation metadata right on their beans instead of scattering it in JSP pages.
Think about what it takes to get your objects to work within frameworks these days, or what APIs and specifications you have to learn in able to meet the needs of your employer.
XML and Java reflection was one progression made in order to simplify the way we develop applications and work with frameworks.
You will learn how applications, applets, and servlets are similar and different, how to build a basic user interface that handles simple end user input, how to read data from and write data to files and databases, and how to send and receive data over the network.
This tutorial is not comprehensive, but instead takes you on a straight and uncomplicated path through the more common programming features available in the Java platform.
No more cutting and pasting your class names and method names into a separate XML file while making sure the names match up with the Java code.
Instead, just declare the configuration data on that exact method in your code through annotations.
In order to work with many of these frameworks, we have to be able to tie in our business objects through various methods.
A couple of the ways developers tie into a framework are: Metadata allows us to bind framework-related configuration data to our business objects without changing or extending any of the objects' implicit responsibilities. If you change a Javadoc comment, it's not going to change the way your code command. You can add configuration data to your object without changing the way the code behaves, unless you are explicitly looking for that particular metadata.
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