Java Tutorials Corner: Count XML Element using DOM parser

Count XML Element using DOM parser

In this tutorials we going to see how to count the element in XML document using DOM parser .
1. Create Project Called JavaXML.
2. Create package called com.javatutorialscorner.xml.dom under JavaXML.
3. Create Java class called CountXMLElement.java under com.javatutorialscorner.xml.dom package.
CountXMLElement.java

package com.javatutorialscorner.xml.dom;
 
import java.io.File;
import java.io.IOException;
 
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
 
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
 
public class CountXMLElement {
 
 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
 
  try {
   File xmlFile = new File("C:\\jtc\\student.xml");
   DocumentBuilderFactory builderFactory = DocumentBuilderFactory
     .newInstance();
   DocumentBuilder builder = builderFactory.newDocumentBuilder();
   Document document = builder.parse(xmlFile);
   document.getDocumentElement().normalize();
   System.out.println("Root Node :"
     + document.getDocumentElement().getNodeName());
   NodeList list = document.getElementsByTagName("student");
   System.out.println("Number of element under "
     + document.getDocumentElement().getNodeName() + " : "
     + list.getLength());
  } catch (ParserConfigurationException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (SAXException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 
 }
 
}

student.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<college>
<student id="ECE-01">
<firstname>Sathish</firstname>
<lastname>J</lastname>
</student>
<student id="ECE-02">
<firstname>Mohan</firstname>
<lastname>P</lastname>
</student>
<student id="ECE-03">
<firstname>Saravan</firstname>
<lastname>P</lastname>
</student>
<student id="ECE-04">
<firstname>Muthu</firstname>
<lastname>S</lastname>
</student>
</college>