XML validation
can also be done using the java API. A separate package is available
with all the available classes and methods. You need to use the package
javax.xml.validation if you want to use these classes.
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As
with other XML processing the key to this validation also is to load
the XML document, you want to validate, in the Document object.
As a part
of creating a document object you would need to create a DocumentBuilderFactory
and then a DocumentBuilder. Then load the XML document you want to validate
into the Document object.
Now our
next task is to load the schema file to a schema object. For this you
need to create a SchemaFactory and then create a schema object to load
the schema file. Then the next step is to create a validator object
to validate the document source. The validator object has a validate()
method that is used to validate the document.
