(Some event handlers are managed with a configuration mechanism that is quite similar to the feature flag mechanism.) The example also shows how SAX2 parsers expose the core XML notion of Validation is particularly important when you are interchanging documents that have been wholly or partially authored by hand, but it can also be helpful when working with XML that's generated by custom code.
In this article, i am going to use the Swing for the UI purpose and for the XML validation against its schema i will use DOM parser as well as SAX Parser.
previously we have already seen that how these parsers works in detail.
The various types of XML schema provide different kinds of rule-based sanity checks, which are usually done before applications see the data.
(W3C's schemas also extract additional information items, beyond the XML data model of elements, attributes, and text.
A SAX parser reads the input file and checks it for correctness.
While it is parsing the file, it is making callbacks to user code that note what the parser is seeing.
When the sax parser is invoked it creates as instance of the class The designers of XML intended to write a clear concise specification of a structured document language.
By now, you have done a lot of experimenting with the nonvalidating parser.
(Note that, when parsing document that is not well-formed in validating mode, the parser might encounter validity errors before detecting well-formedness problems, so also be prepared for objects.