Main.java

package com.lethee;

import java.io.StringReader;
import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.CDATASection;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

public class Main {

	public static String getExampleXmlString() {
		StringBuilder sb = new StringBuilder();
		sb.append("<?xml version=\"1.0\" ?>");
		sb.append("<root>");
		sb.append("  <item>");
		sb.append("     <![CDATA[  Gong &amp; You ]]>");
		sb.append("  </item>");
		sb.append("</root>");
		return sb.toString();
	}

	public static void read() throws Exception {
		DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
		Document doc = builder.parse(new InputSource(new StringReader(getExampleXmlString())));

		NodeList names = doc.getElementsByTagName("item");
		Node name = names.item(0);
		for (int i = 0; i < name.getChildNodes().getLength(); ++i) {
			Node nameChild = name.getChildNodes().item(i);
			if (nameChild instanceof CDATASection) {
				String text = ((CDATASection) nameChild).getData();
				System.out.println(text);
			}
		}
	}

	public static String toXmlString(Document doc) throws Exception {
		Transformer tf = TransformerFactory.newInstance().newTransformer();
		tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
		tf.setOutputProperty(OutputKeys.INDENT, "yes");
		StringWriter out = new StringWriter();
		tf.transform(new DOMSource(doc), new StreamResult(out));
		return out.toString();
	}

	public static void write() throws Exception {
		DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
		Document doc = builder.newDocument();

		Element rootElement = doc.createElement("root");
		doc.appendChild(rootElement);

		Element item1 = doc.createElement("item");
		item1.appendChild(doc.createCDATASection("Gong < & > You")); // CDATA is not 'escape'-ed
		rootElement.appendChild(item1);

		Element item2 = doc.createElement("item");
		item2.appendChild(doc.createTextNode("Gong < & > You")); // Text is 'escape'-ed
		rootElement.appendChild(item2);
		
		// HTML escape table
		// http://www.freeformatter.com/html-entities.html

		System.out.println(toXmlString(doc));
	}

	public static void main(String[] args) throws Exception {
		read();
		write();
	}
}

/* output
  Gong &amp; You 
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<root>
<item><![CDATA[Gong < & > You]]></item>
<item>Gong &lt; &amp; &gt; You</item>
</root>
*/