Processing
XML document using the Java code is simple if you know the logic and
the classes and the methods that are used in it. A document object is
created to load the XML file that you want to process. The following
code sample would do that,
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import
org.w3c.dom.Document;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
DocumentBuilderFactory
dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse (new File("ur_xml_file.xml"));
. . .
. . .
doc.getDocumentElement().getNodeName());
NodeList nl = doc.getElementsByTagName("element_name");
. . .
. . .
The above
code could be understood if you see how the document object is created
and the XML file you want to process is loaded into that document object.
Once the XML document is loaded you can use the getDocumentElement().getNodeName()
to get the name of the root element.
You can
create a NodeList object and get all the nodes by Tagname using the
method getElementsByTagName(). This method takes the name of the element
that you want as the argument in the form of string. You can loop through
the NodeList object using a 'for' loop and work with the elements.
