Adding White Space

Question

I am trying an example form "Professional Java XML" book about creating a simple DOM tree. The problem is that the Output XML is without new line (i.e. the all tags are one the same line)
does any body know how to toggle this problem, please your help?
I am using the following code:
import org.w3c.dom.*;
// We are going to use JAXP's classes for DOM I/O
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.dom.*;
// Import other Java classes
import java.io.PrintWriter;
import java.io.IOException;
public class CreatePresident {
public static void main(String[] args) {
Document doc;
Element president;
Element person;
Element firstName;
Element surname;
try
// This is JAXP's way to create a new empty Document
// The lines within the {} braces are NOT DOM level 1
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setIgnoringElementContentWhitespace(true);
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.newDocument();
// We'll start by creating a "<Person>"
person = doc.createElement("Person");
// No create the "<FirstName>" element
firstName = doc.createElement("FirstName");
// Create a Text node "George" and add it to the "FirstName" tag
firstName.appendChild( doc.createTextNode("George") );
// Add the "<FirstName>" tag to "<Person>"
person.appendChild(firstName);
// Same as above
surname = doc.createElement("Surname");
surname.appendChild( doc.createTextNode("Bush") );
person.appendChild(surname);
president = doc.createElement("President");
// Set the "Country" attribute in "<Presedent>"
president.setAttribute("Country","US");
president.appendChild( person );
// Add everything to the XmlDocument (doc)
doc.appendChild( president );
// This is JAXP's way to output a DOM to a OutputStream
// The lines within the {} braces are NOT DOM level 1
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
transformer.transform(new DOMSource(doc), new StreamResult(System.out));
catch( ParserConfigurationException pcEx )
System.out.println("ParserConfigurationException: "+pcEx.getMessage());
pcEx.printStackTrace();
catch( TransformerConfigurationException tcEx )
System.out.println("TransformerConfigurationException: "+tcEx.getMessage());
tcEx.printStackTrace();
catch( TransformerException tEx )
System.out.println("TransformerException: "+tEx.getMessage());
tEx.printStackTrace();
Regards

Answer 1

Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
transformer.transform(new DOMSource(doc), new StreamResult(out));