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 
{
 public static void main(String[] args) 
 {
   try 
   {
     File xmlFile = new File("File Path of Drive");
     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) 
   {
     e.printStackTrace();
   } 
   catch (SAXException e) 
   {
     e.printStackTrace();
   } 
   catch (IOException e) 
   {
     e.printStackTrace();
   }
 }
}



<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<college>
<student id="1">
<firstname>Adam</firstname>
<lastname>J</lastname>
</student>
<student id="2">
<firstname>Tim</firstname>
<lastname>P</lastname>
</student>
<student id="3">
<firstname>Sam</firstname>
<lastname>P</lastname>
</student>
<student id="4">
<firstname>Mull</firstname>
<lastname>S</lastname>
</student>
</college>