Documentbuilder validating

And that brings up the second case: if you get XML from someone who doesn't know the rules.

For example, XML generated using simple string output in a Windows environment will probably be encoded in .

A document may be well-formed — and usable — but not valid.

There are multiple ways to validate input, and this article will look at two of them: Document Type Definitions (DTD) and XML Schema (XSD).

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.

Let validation do what it can, but ultimately your program must explicitly verify that an XML file contains the correct data.But in this example I used a Java String, which is UTF-16 encoded, without a prologue. The answer is that the parser did not read the string directly.Instead it read from an doesn't match the actual content.As I describe elsewhere, XPath has its own hoops with regard to namespaces.But for everything else (including new code using XPath), namespace-aware parsing should be your default.

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