Java/XML/DefaultHandler

SAX event handler

   <source lang="java">

import java.io.File; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import org.xml.sax.Attributes; import org.xml.sax.helpers.DefaultHandler; public class TrySAXHandler {

 public static void main(String args[]) throws Exception {
   File file = new File("y.xml");
   SAXParserFactory spf = SAXParserFactory.newInstance();
   SAXParser parser = null;
   spf.setNamespaceAware(true);
   spf.setValidating(true);
   System.out.println("Parser will " + (spf.isNamespaceAware() ? "" : "not ")
       + "be namespace aware");
   System.out.println("Parser will " + (spf.isValidating() ? "" : "not ")
       + "validate XML");
   parser = spf.newSAXParser();
   System.out.println("Parser object is: " + parser);
   MySAXHandler handler = new MySAXHandler();
   parser.parse(file, handler);
 }

} class MySAXHandler extends DefaultHandler {

 public void startDocument() {
   System.out.println("Start document: ");
 }
 public void endDocument() {
   System.out.println("End document: ");
 }
 public void startElement(String uri, String localName, String qname,
     Attributes attr) {
   System.out.println("Start element: local name: " + localName + " qname: "
       + qname + " uri: " + uri);
 }
 public void endElement(String uri, String localName, String qname) {
   System.out.println("End element: local name: " + localName + " qname: "
       + qname + " uri: " + uri);
 }
 public void characters(char[] ch, int start, int length) {
   System.out.println("Characters: " + new String(ch, start, length));
 }
 public void ignorableWhitespace(char[] ch, int start, int length) {
   System.out
       .println("Ignorable whitespace: " + new String(ch, start, length));
 }

} <?xml version="1.0"?> <circle>

 <radius>15</radius>
 <position>
   <x-coordinate>30</x-coordinate>
   <y-coordinate>50</y-coordinate>
 </position>

</circle>

</source>