Parsing / Reading XML file in Java Using org.w3c.dom parser

I have a Piece of code which can be used to Parse a XML file using java DOM Parser.

Step 1: Create a XML file as below

<?xml version="1.0"?>
<Employees>
    <Employee>
        <name>Melvyn</name>
        <grade>B</grade>
        <age>23</age>
    </Employee>
    <Employee>
        <name>Nixon</name>
        <grade>A</grade>
        <age>25</age>
    </Employee>
    <Employee>
        <name>Bruce</name>
        <grade>A</grade>
        <age>28</age>
    </Employee>
</Employees>

2.Java Code to Read the XML file

package net.viralpatel.java.xmlparser;
 
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
 
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
 
public class XMLParser {
 
    public void getAllUserNames(String fileName) {
        try {
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            File file = new File(fileName);
            if (file.exists()) {
                Document doc = db.parse(file);
                Element docEle = doc.getDocumentElement();
 
                // Print root element of the document
                System.out.println("Root element of the document: "
                        + docEle.getNodeName());
 
                NodeList EmployeeList = docEle.getElementsByTagName("Employee");
 
                // Print total Employee elements in document
                System.out
                        .println("Total Employees: " + EmployeeList.getLength());
 
                if (EmployeeList != null && EmployeeList.getLength() > 0) {
                    for (int i = 0; i < EmployeeList.getLength(); i++) {
 
                        Node node = EmployeeList.item(i);
 
                        if (node.getNodeType() == Node.ELEMENT_NODE) {
 
                            System.out
                                    .println("=====================");
 
                            Element e = (Element) node;
                            NodeList nodeList = e.getElementsByTagName("name");
                            System.out.println("Name: "
                                    + nodeList.item(0).getChildNodes().item(0)
                                            .getNodeValue());
 
                            nodeList = e.getElementsByTagName("grade");
                            System.out.println("Grade: "
                                    + nodeList.item(0).getChildNodes().item(0)
                                            .getNodeValue());
 
                            nodeList = e.getElementsByTagName("age");
                            System.out.println("Age: "
                                    + nodeList.item(0).getChildNodes().item(0)
                                            .getNodeValue());
                        }
                    }
                } else {
                    System.exit(1);
                }
            }
        } catch (Exception e) {
            System.out.println(e);
        }
    }
    public static void main(String[] args) {
 
        XMLParser parser = new XMLParser();
        parser.getAllUserNames("c:\\test.xml");
    }
}

Following is the output of our XML parser.
Program Output

Root element of the document: students
Total Employees: 3
==============================
Name: Melvyn
Grade: B
Age: 23
==============================
Name: Nixon
Grade: A
Age: 25
==============================
Name: Bruce
Grade: A
Age: 28