Java tutorial
import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.util.List; import org.jdom2.Document; import org.jdom2.Element; import org.jdom2.JDOMException; import org.jdom2.input.SAXBuilder; import org.jdom2.output.Format; import org.jdom2.output.XMLOutputter; public class Main { public static void main(String[] args) throws Exception { File xml = new File("yourFile.xml"); Document doc = (Document) new SAXBuilder().build(xml); Element rootNode = doc.getRootElement(); List list = rootNode.getChildren("staff"); XMLOutputter xmlOut = new XMLOutputter(); for (int i = 0; i < list.size(); i++) { Element node = (Element) list.get(i); if (node.getChildText("firstname").equals("sanjay")) node.getChild("salary").getChild("basic").setText("250000"); xmlOut.setFormat(Format.getPrettyFormat()); xmlOut.output(doc, new FileWriter("yourFile.xml")); } } }