Parsing and Validation

• When your XML document has a DTD, you can request validation when parsing
• The parser will check that all child elements and attributes conform
  to the ELEMENT and ATTLIST rules in the DTD
• The parser reports an error if the document is invalid
• Use the setValidating method of the DocumentBuilderFactory
  before calling newDocumentBuilder method

  DocumentBuilderFactory factory =
        DocumentBuilderFactory.newInstance();
  factory.setValidating(true);
  DocumentBuilder builder = factory.newDocumentBuilder();
  Document doc = builder.parse(. . .);