https://www.javatpoint.com/how-to-read-xml-file-in-java
Example of reading XML file using DOM Parser

The following example reads the same XML file XMLFile.xml, and showing that how to loop the node one by one. It prints the node value, name and attribute if any.

Example output:

import java.io.File;  
import javax.xml.parsers.DocumentBuilder;  
import javax.xml.parsers.DocumentBuilderFactory;  
import org.w3c.dom.Document;  
import org.w3c.dom.NamedNodeMap;  
import org.w3c.dom.Node;  
import org.w3c.dom.NodeList;  
public class ReadXMLFileExample2  
{  
public static void main(String[] args)  
{  
try   
{  
File file = new File("F:\\XMLFile.xml");  
DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();  
Document document = documentBuilder.parse(file);  
System.out.println("Root element: "+ document.getDocumentElement().getNodeName());  
if (document.hasChildNodes())   
{  
printNodeList(document.getChildNodes());  
}  
}   
catch (Exception e)  
{  
System.out.println(e.getMessage());  
}  
}  
private static void printNodeList(NodeList nodeList)  
{  
for (int count = 0; count < nodeList.getLength(); count++)   
{  
Node elemNode = nodeList.item(count);  
if (elemNode.getNodeType() == Node.ELEMENT_NODE)   
{  
// get node name and value  
System.out.println("\nNode Name =" + elemNode.getNodeName()+ " [OPEN]");  
System.out.println("Node Content =" + elemNode.getTextContent());  
if (elemNode.hasAttributes())   
{  
NamedNodeMap nodeMap = elemNode.getAttributes();  
for (int i = 0; i < nodeMap.getLength(); i++)   
{  
Node node = nodeMap.item(i);  
System.out.println("attr name : " + node.getNodeName());  
System.out.println("attr value : " + node.getNodeValue());  
}  
}  
if (elemNode.hasChildNodes())   
{  
//recursive call if the node has child nodes  
printNodeList(elemNode.getChildNodes());  
}  
System.out.println("Node Name =" + elemNode.getNodeName()+ " [CLOSE]");  
}  
}  
}  
}  
Output:

Root element: class

Node Name =class [OPEN]
Node Content =

101
Naman
Kumar
Maths
83

102
Kapil
Kumar
Chemistry
60

103
Harsh
Singh
English
70

104
Jitesh
Singh
Physics
76

Node Name =student [OPEN]
Node Content =
101
Naman
Kumar
Maths
83

Node Name =id [OPEN]
Node Content =101
Node Name =id [CLOSE]

Node Name =firstname [OPEN]
Node Content =Naman
Node Name =firstname [CLOSE]

Node Name =lastname [OPEN]
Node Content =Kumar
Node Name =lastname [CLOSE]

Node Name =subject [OPEN]
Node Content =Math
Node Name =subject [CLOSE]

Node Name =marks [OPEN]
Node Content =83
Node Name =marks [CLOSE]
Node Name =student [CLOSE]

Node Name =student [OPEN]
Node Content =
102
Kapil
Kumar
Chemistry
60

Node Name =id [OPEN]
Node Content =102
Node Name =id [CLOSE]

Node Name =firstname [OPEN]
Node Content =Kapil
Node Name =firstname [CLOSE]

Node Name =lastname [OPEN]
Node Content =Kumar
Node Name =lastname [CLOSE]

Node Name =subject [OPEN]
Node Content =Chemistry
Node Name =subject [CLOSE]

Node Name =marks [OPEN]
Node Content =60
Node Name =marks [CLOSE]
Node Name =student [CLOSE]

Node Name =student [OPEN]
Node Content =
103
Harsh
Singh
English
70

Node Name =id [OPEN]
Node Content =103
Node Name =id [CLOSE]

Node Name =firstname [OPEN]
Node Content =Harsh
Node Name =firstname [CLOSE]

Node Name =lastname [OPEN]
Node Content =Singh
Node Name =lastname [CLOSE]

Node Name =subject [OPEN]
Node Content =English
Node Name =subject [CLOSE]

Node Name =marks [OPEN]
Node Content =70
Node Name =marks [CLOSE]
Node Name =student [CLOSE]

Node Name =student [OPEN]
Node Content =
104
Jitesh
Singh
Physics
76

Node Name =id [OPEN]
Node Content =104
Node Name =id [CLOSE]

Node Name =firstname [OPEN]
Node Content =Jitesh
Node Name =firstname [CLOSE]

Node Name =lastname [OPEN]
Node Content =Singh
Node Name =lastname [CLOSE]

Node Name =subject [OPEN]
Node Content =Physics
Node Name =subject [CLOSE]

Node Name =marks [OPEN]
Node Content =76
Node Name =marks [CLOSE]
Node Name =student [CLOSE]
Node Name =class [CLOSE]
// end