Skip to Main Content
Java Cookbook
book

Java Cookbook

by Ian F. Darwin
June 2001
Intermediate to advanced content levelIntermediate to advanced
888 pages
21h 1m
English
O'Reilly Media, Inc.
Content preview from Java Cookbook

Generating Your Own XML with DOM

Problem

You want to generate your own XML files or modify existing documents.

Solution

Use DOM or JDOM; parse or create the document, and call its write method.

Discussion

Sun’s XmlDocument class has a write( ) method that can be called with either an OutputStream or a Writer. To use it, create an XML document object using the XmlDocument constructor. Create nodes, and append them into the tree. Then call the document’s write( ) method. For example, suppose you want to generate a poem in XML. Running the program and letting the XML appear on the standard output might look something like this:

$ jikes +E -d . DocWrite.java
$ java DocWrite
<?xml version="1.0" encoding="UTF-8"?>

<Poem>
  <Stanza>
    <Line>Once, upon a midnight dreary</Line>
    <Line>While I pondered, weak and weary</Line>
  </Stanza>
</Poem>
$

The code for this is fairly short; see Example 21-8.

Example 21-8. DocWrite.java

import java.io.*; import org.w3c.dom.*; import com.sun.xml.tree.*; /** Make up and write an XML document */ public class DocWrite { public static void main(String[] av) throws IOException { DocWrite dw = new DocWrite( ); XmlDocument doc = dw.makeDoc( ); doc.write(System.out); } /** Generate the XML document */ protected XmlDocument makeDoc( ) { try { XmlDocument doc = new XmlDocument( ); Node root = doc.createElement("Poem"); doc.appendChild(root); Node stanza = doc.createElement("Stanza"); root.appendChild(stanza); Node line = doc.createElement("Line"); stanza.appendChild(line); ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Practical Cloud-Native Java Development with MicroProfile

Practical Cloud-Native Java Development with MicroProfile

Emily Jiang, Andrew McCright, John Alcorn, David Chan, Alasdair Nottingham
Distributed Computing in Java 9

Distributed Computing in Java 9

Raja Malleswara Rao Malleswara Rao Pattamsetti

Publisher Resources

ISBN: 0596001703Supplemental ContentCatalog PageErrata