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import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class MainClass implements ErrorHandler {
public static void main(String args[]) throws Exception {
DocumentBuilderFactory builderFactory = DocumentBuilderFactory
.newInstance();
builderFactory.setNamespaceAware(true);
builderFactory.setValidating(true);
DocumentBuilder builder = null;
builder = builderFactory.newDocumentBuilder();
builder.setErrorHandler(new MainClass());
Document xmlDoc = null;
xmlDoc = builder.parse(new File("y.xml"));
DocumentType doctype = xmlDoc.getDoctype();
System.out.println("DOCTYPE node:\n" + doctype);
listNodes(xmlDoc.getDocumentElement(), "");
}
static void listNodes(Node node, String indent) {
String nodeName = node.getNodeName();
System.out.println(indent + nodeName + " Node, type is "
+ node.getClass().getName() + ":");
System.out.println(indent + " " + node);
NodeList list = node.getChildNodes();
if (list.getLength() > 0) {
System.out.println(indent + "Child Nodes of " + nodeName + " are:");
for (int i = 0; i < list.getLength(); i++)
listNodes(list.item(i), indent + " ");
}
}
public void fatalError(SAXParseException spe) throws SAXException {
System.out.println("Fatal error at line " + spe.getLineNumber());
System.out.println(spe.getMessage());
throw spe;
}
public void warning(SAXParseException spe) {
System.out.println("Warning at line " + spe.getLineNumber());
System.out.println(spe.getMessage());
}
public void error(SAXParseException spe) {
System.out.println("Error at line " + spe.getLineNumber());
System.out.println(spe.getMessage());
}
}
<?xml version="1.0"?>
<!DOCTYPE address SYSTEM "AddressDoc.dtd">
<address>
<buildingnumber> 29 </buildingnumber>
<street> South Lasalle Street</street>
<city>Chicago</city>
<state>Illinois</state>
<zip>60603</zip>
</address>
<!ELEMENT address (buildingnumber, street, city, state, zip)>
<!ELEMENT buildingnumber (#PCDATA)>
<!ELEMENT street (#PCDATA)>
<!ELEMENT city (#PCDATA)>
<!ELEMENT state (#PCDATA)>
<!ELEMENT zip (#PCDATA)>
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