e543. adding a text node to a dom document.txt

这里面包含了一百多个JAVA源文件

If any special characters appear in the text of a text node (e.g., <>"), they are automatically converted to entities by the XML writers. 
    // Obtain an XML document; this method is implemented in
    // e510 The Quintessential Program to Create a DOM Document from an XML File
    Document doc = parseXmlFile("infilename.xml", false);
    
    // Add a CDATA section to the root element
    Element element = doc.getDocumentElement();
    Text text = doc.createTextNode("data\n");
    element.appendChild(text);
    
    // Special characters are automatically converted to entities by the XML writers
    text = doc.createTextNode("<>&\"'");
    element.appendChild(text);

This is the sample input for the example: 
    <?xml version="1.0" encoding="UTF-8"?>
    <map>
        <entry key="key1" value="value1" />
        <entry key="key2" />
    </map>

The resulting XML from running the example is: 
    <?xml version="1.0" encoding="UTF-8"?>
    <map>
        <entry key="key1" value="value1"/>
        <entry key="key2"/>
    data
    &lt;&gt;&amp;"'</map>