Adding a CDATA Section to a DOM Document
import java.io.File; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.CDATASection; import org.w3c.dom.Document; import org.w3c.dom.Element; public class Main { public static void main(String[] argv) throws Exception { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setValidating(true); factory.setExpandEntityReferences(false); Document doc = factory.newDocumentBuilder().parse(new File("filename")); Element element = doc.getElementById("key1"); // Add a CDATA section to the root element element = doc.getDocumentElement(); CDATASection cdata = doc.createCDATASection("data"); element.appendChild(cdata); } }