Tutorials : Schema Validation with JAXP or JDOM :

Schema Validation with JAXP or JDOM

To maximize the data transferring capabilities of any XML document, that document must be made acceptable to the widest possible audience of users. The easiest way to do this is to make sure that your document conforms to XML schema standards from the very beginning.

But how can you make sure you've done this correctly? And how can you check to see if an existing XML document conforms? The process is called validation. You perform validation on the XML document in question with a schema using parsing APIs.

For instance, to confirm a schema-conforming XML document, you can use the JDOM API to parse your XML document and create a DOM document structure, while also validating the XML document.

If your objective is only to validate an XML document, JAXP 1.3 also provides a validation API.

This article discusses how to validate an XML document using both these validation APIs.

You'll be using a sample XML document called catalog.xml (Listing 1).

The example XML schema is called catalog.xsd (shown in Listing 2). This is the standard to which you want catalog.xml to conform:

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