In this tutorial you will learn that how to create a xml file in Java

Java Generate XML Example

To Create a XML in Java using Dom follow the Steps

1. Get the DocumentBuilderFactory instance

DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();

2. Get DocumentBuilder instance using DocumentBuilderFactory

DocumentBuilder documentBuilder = dbFactory.newDocumentBuilder();

3. Create a document object from documentBuilder

// Create a new document
document = documentBuilder.newDocument();

4. Create a root elements and add it into the document

// Creating a root element
Element rootElement = document.createElement("RootElement");
// Add it to the Document
document.appendChild(rootElement );

5. Create the child element

// Creating student elements 
Element ChildElement = document.createElement("Child");
		
//adding attribute to student element
ChildElement .setAttribute("property", "ChildProperty");

6. Add the child element to the root element

rootElement.appendChild(ChildElement);

7. Create the output formate

// Creating XML output format
OutputFormat xmlOutputFormat = new OutputFormat(document);
xmlOutputFormat.setIndenting(true);

8. Create a Serialiser

XMLSerializer consoleSerializer = new XMLSerializer(System.out,	xmlOutputFormat);
XMLSerializer fileSerializer = new XMLSerializer(new FileOutputStream(new File("C:\\college.xml")),	xmlOutputFormat);

9. Serialise the document fileSerializer.serialize(document); An example for creating the XML in Java is given below

package net.roseindia;

import java.io.File;
import java.io.FileOutputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.xml.serialize.OutputFormat;
import org.apache.xml.serialize.XMLSerializer;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;

public class JavaCreateXml {
	Document document;

	public JavaCreateXml() {
	}

	public void createXmlDocument() {

		// Get The Document builder factory instance
		DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
				.newInstance();
		try {
			// Create the documentBuilder instance from documentBuilder
			DocumentBuilder documentBuilder = documentBuilderFactory
					.newDocumentBuilder();

			// Create a new document
			document = documentBuilder.newDocument();

			// Creating a root element
			Element collegeElement = document.createElement("College");

			// Add it to the Document
			document.appendChild(collegeElement);

			// Getting all the student elements
			Element studentElement = createStudentElement();
			collegeElement.appendChild(studentElement);

			// Getting all the faculity elements
			Element faculity = createFaculityElement();
			collegeElement.appendChild(faculity);

			// Creating XML output format
			OutputFormat xmlOutputFormat = new OutputFormat(document);
			xmlOutputFormat.setIndenting(true);

			// Creating XML output format for Console
			XMLSerializer consoleSerializer = new XMLSerializer(System.out,
					xmlOutputFormat);
			// Creating XML output format for xml file
			XMLSerializer fileSerializer = new XMLSerializer(
					new FileOutputStream(new File("C:\\college.xml")),
					xmlOutputFormat);

			// Serializing the format
			consoleSerializer.serialize(document);
			fileSerializer.serialize(document);
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	public Element createStudentElement() {
		// Creating student elements
		Element studentElement = document.createElement("Student");

		// adding attribute to student element
		studentElement.setAttribute("type", "regular");

		// Adding name elements to student
		Element studentNameElement = document.createElement("Name");
		Text nameText = document.createTextNode("Ram");
		studentNameElement.appendChild(nameText);
		studentElement.appendChild(studentNameElement);

		// Adding Course elements to student
		Element studentCourseElement = document.createElement("Course");
		Text courseText = document.createTextNode("B.Tech");
		studentCourseElement.appendChild(courseText);
		studentElement.appendChild(studentCourseElement);

		// Adding Address elements to student
		Element studentAddressElement = document.createElement("Address");
		Text addressText = document.createTextNode("New Delhi");
		studentAddressElement.appendChild(addressText);
		studentElement.appendChild(studentAddressElement);

		return studentElement;
	}

	public Element createFaculityElement() {
		// Creating Faculity elements
		Element faculityElement = document.createElement("Faculity");
		faculityElement.setAttribute("type", "regular");

		Element faculityNameElement = document.createElement("Name");
		Text nameText = document.createTextNode("Toni Dicosta");
		faculityNameElement.appendChild(nameText);
		faculityElement.appendChild(faculityNameElement);

		Element faculitySubjectElement = document.createElement("Subject");
		Text subjectText = document.createTextNode("Java");
		faculitySubjectElement.appendChild(subjectText);
		faculityElement.appendChild(faculitySubjectElement);

		return faculityElement;
	}

	public static void main(String[] args) {
		new JavaCreateXml().createXmlDocument();
	}
}

When you run this application it will display message as shown below:

<?xml version="1.0" encoding="UTF-8"?> <College> <Student type="regular"> <Name>Ram</Name> <Course>B.Tech</Course> <Address>New Delhi</Address> </Student> <Faculity type="regular"> <Name>Toni Dicosta</Name> <Subject>Java</Subject> </Faculity> </College>

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