Nikos Maravitsas

About Nikos Maravitsas

Nikos has graduated from the Department of Informatics and Telecommunications of The National and Kapodistrian University of Athens. Currently, his main interests are system’s security, parallel systems, artificial intelligence, operating systems, system programming, telecommunications, web applications, human – machine interaction and mobile development.

Modify XML File in Java using JDOM parser example

In the previous tutorial we show how to read an XML File using JDOM parser. In this tutorial we are going to see how to modify the contents of an XML File.
 
 
 
 
 
 
 
 
 
 
This is the XML File we are going to use for the demonstration.

testFile.xml:

<?xml version="1.0" encoding="UTF-8" standalone="no"?><company>

	<employee id="10">
		<firstname>Jeremy</firstname>
		<lastname>Harley</lastname>
        <email>james@example.org</email>
		<department>Human Resources</department>
		<salary>2000000</salary>
	    <address>34 Stanley St.©</address>

	</employee>

	<employee id="2">
		<firstname>John</firstname>
		<lastname>May</lastname>
		<email>john@example.org</email>
		<department>Logistics</department>
		<salary>400</salary>
	    <address>123 Stanley St.</address>
	</employee>

</company>

ModifyXMLFileWithJDOM.java:

package com.javacodegeeks.java.core;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
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 ModifyXMLFileWithJDOM {

	private static final String xmlFilePath = "C:\\Users\\nikos7\\Desktop\\filesForExamples\\testFile.xml";

	public static void main(String[] args) {

		SAXBuilder saxBuilder = new SAXBuilder();
		File xmlFile = new File(xmlFilePath);

		try {
			Document document = (Document) saxBuilder.build(xmlFile);

			Element rootElement = document.getRootElement();

			Element employee = rootElement.getChild("employee");

			// update the value of an attribute
			employee.getAttribute("id").setValue("120");

			// delete an element
			employee.removeChild("address");

			// update an element's value
			employee.getChild("department").setText("Logistics");

			// add a new element
			Element phoneNo = new Element("phonenumber").setText("9120970912");
			phoneNo.setAttribute("location", "home");
			employee.addContent(phoneNo);

			XMLOutputter xmlOutput = new XMLOutputter();

			//update the file with nice XML formating  
			xmlOutput.setFormat(Format.getPrettyFormat());

			xmlOutput.output(document, new FileWriter(xmlFilePath));

			//you can use this to output the result in standard output for debugging purposeses
			// xmlOutput.output(doc, System.out);

			System.out.println("XML File successfully updated!");

		} catch (IOException io) {
			System.out.println(io.getMessage());
		} catch (JDOMException jdomex) {
			System.out.println(jdomex.getMessage());
		}
	}
}

Updated testFile.xml:

<?xml version="1.0" encoding="UTF-8"?>
<company>
  <employee id="120">
    <firstname>Jeremy</firstname>
    <lastname>Harley</lastname>
    <email>james@example.org</email>
    <department>Logistics</department>
    <salary>2000000</salary>
    <phonenumber location="home">9120970912</phonenumber>
  </employee>
  <employee id="2">
    <firstname>John</firstname>
    <lastname>May</lastname>
    <email>john@example.org</email>
    <department>Logistics</department>
    <salary>400</salary>
    <address>123 Stanley St.</address>
  </employee>
</company>

 
This was an example on how to modify the contents of an XML File using JDOM.

Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you two of our best selling eBooks for FREE!

JPA Mini Book

Learn how to leverage the power of JPA in order to create robust and flexible Java applications. With this Mini Book, you will get introduced to JPA and smoothly transition to more advanced concepts.

JVM Troubleshooting Guide

The Java virtual machine is really the foundation of any Java EE platform. Learn how to master it with this advanced guide!

Given email address is already subscribed, thank you!
Oops. Something went wrong. Please try again later.
Please provide a valid email address.
Thank you, your sign-up request was successful! Please check your e-mail inbox.
Please complete the CAPTCHA.
Please fill in the required fields.
Examples Java Code Geeks and all content copyright © 2010-2014, Exelixis Media Ltd | Terms of Use | Privacy Policy | Contact
All trademarks and registered trademarks appearing on Examples Java Code Geeks are the property of their respective owners.
Java is a trademark or registered trademark of Oracle Corporation in the United States and other countries.
Examples Java Code Geeks is not connected to Oracle Corporation and is not sponsored by Oracle Corporation.
Do you want to know how to develop your skillset and become a ...
Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you two of our best selling eBooks for FREE!

Get ready to Rock!
You can download the complementary eBooks using the links below:
Close