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3.7. Creating XML from Java code
Last updated: 2 January 2013.

This tutorial will show you how to create a JDOM document from Java code. It is actually quite simple. First, you need to create the root element to which you add children as needed. Then you create a Document object with the root element. Here is an example:

import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;


public final class JDOMDemo {


   
private void createNewDocument(){
         
try {
               
// Create the root element
               
Element rootElement = new Element("HOTEL");

               
// Create a new ROOM element
               
Element room = new Element("ROOM");

               
// Set up a new NUMBER element and add it to ROOM
               
Element number = new Element("NUMBER");
                number.addContent
("17");
                room.addContent
(number);

               
// Set up a CATEGORY element and add it to ROOM
               
Element category = new Element("CATEGORY");
                category.addContent
("STANDARD");
                room.addContent
(category);

               
// Set up a BED element and add it to ROOM
               
Element bed = new Element("BED");
                bed.addContent
("DOUBLE SIZE");
                room.addContent
(bed);

               
// Set up a FLOOR element and add it to ROOM
               
Element floor = new Element("FLOOR");
                floor.addContent
("5");
                room.addContent
(floor);

               
// Set up an AIR_CONDITIONING element and add it to ROOM
               
Element airConditioning = new Element("AIR_CONDITIONING");
                airConditioning.addContent
(new Element("TABLE_FANS").addContent("2"));
                room.addContent
(airConditioning);

               
// Add the newly created ROOM element to the root element
               
rootElement.addContent(room);

               
// Create the document with the root element
               
Document document = new Document(rootElement);

               
// Output the JDOM document to the standard output
               
XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());
                outputter.output
(document, System.out);
         
}
         
catch (Exception e) {
               
e.printStackTrace();
         
}
    }


   
public static void main(String[] args){
         
new JDOMDemo().createNewDocument();
   
}

}

The output is:

   <?xml version="1.0" encoding="UTF-8"?>
   <HOTEL>
            <ROOM>
                     <NUMBER>17</NUMBER>
                     <CATEGORY>STANDARD</CATEGORY>
                     <BED>DOUBLE SIZE</BED>
                     <FLOOR>5</FLOOR>
                     <AIR_CONDITIONING>
                              <TABLE_FANS>2</TABLE_FANS>
                     </AIR_CONDITIONING>
            </ROOM>
   </HOTEL>


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