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The Java Developers Almanac 1.4Order this book from Amazon. |
e1073. Getting the Root Element in a DOM DocumentThe root element of an XML file is not the same as the root element of a DOM document. In particular, the XML root element is a child of the DOM's root element. The reason is that the XML root element can have siblings, such as aDocumentType or a Comment node. The XML
root node can be found by looking for an element node among the
children of the DOM's root node. However, there is a convenient
method, Document.getDocumentElement() , that does the same thing.
This example demonstrates both methods:
// Create a document; this method is implemented in // e510 The Quintessential Program to Create a DOM Document from an XML File Document doc = parseXmlFile("infilename.xml", false); Element root = null; // Get the XML root node by examining the children nodes NodeList list = doc.getChildNodes(); for (int i=0; i<list.getLength(); i++) { if (list.item(i) instanceof Element) { root = (Element)list.item(i); break; } } // Get the XML root node the easy way root = doc.getDocumentElement();
e528. Getting the Notations in a DOM Document e529. Getting the Declared Entities in a DOM Document e530. Getting the Value of an Entity Reference in a DOM Document
© 2002 Addison-Wesley. |