e524. visiting all the nodes in a dom document.txt

这里面包含了一百多个JAVA源文件

// Obtain an DOM document; this method is implemented in
    // e510 The Quintessential Program to Create a DOM Document from an XML File
    Document doc = parseXmlFile("infilename.xml", true);
    
    visit(doc, 0);
    
    // This method visits all the nodes in a DOM tree
    public static void visit(Node node, int level) {
        // Process node
    
        // If there are any children, visit each one
        NodeList list = node.getChildNodes();
        for (int i=0; i<list.getLength(); i++) {
            // Get child node
            Node childNode = list.item(i);
    
            // Visit child node
            visit(childNode, level+1);
        }
    }