help!Urgent,my assignment.....

[Mellihoney Michael]

the xml file:
<?xml version="1.0" encoding="UTF-8"?>
<booklist>
<book>
  <title>:</title>
  <author>Michael</author>
  <isbn>10010-1234-5567</isbn>
  <publisher>
     <name>Lence</name>
     <country>Japan</country>
  </publisher>
</book>
</booklist>

my servlet program

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import java.io.File;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.DOMException;

public class ReadXMLFile{
  //Global value so it can be ref'd by the tree-adapter
  static Document document;
  public static void main(String argv[]){
  //create an input source
  File xmlFile = new File("booklist.xml");
  //create an instance of document builder that contains a parser
  DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
  try {
   DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
   //parse and create the in-memory document object
   document = docBuilder.parse(xmlFile);
   //get reference to the root document
   Node rootNode = document.getDocumentElement();
   NamedNodeMap nnm1 = rootNode.getAttributes();
   System.out.println("The root node is : "+rootNode.getNodeName());
   recursiveGetNodes(rootNode);
  }
  catch (Exception e) { e.printStackTrace(); }
  } // main()
  public static void recursiveGetNodes(Node r){
   //get the children of the root element and process ALL the child node.
   NodeList children = r.getChildNodes();
   if (children!=null){
     for (int i=0;i < children.getLength(); i++) {
       Node n = children.item(i);
       if (n.getNodeName()!=null&&!n.getNodeName().equals("#text")){
         System.out.println("The child node is : "+n.getNodeName()+ " and the node value is: "+n.getNodeValue());
         recursiveGetNodes(n);
       }
     } 
   }
  }
}//class

the result is:

The root node is : booklist
The child node is : book and the node value is: null
The child node is : title and the node value is: null
The child node is : author and the node value is: null
The child node is : isbn and the node value is: null
The child node is : publisher and the node value is: null
The child node is : name and the node value is: null
The child node is : country and the node value is: null

But I want to read all ChildNode's NodeValue instead of null.
for example,<author>Michael</author>,so The child node is : author and the node value is: "Michael" instead of "null"...
How can I achieve this?
Thanks in advance...

[Frank Carver]

We're not really here to do your assignments for you, but here's a hint.
if (n.getNodeName()!=null&&!n.getNodeName().equals("#text")){
Ask yourself what will be the "node name" of the values you are trying to find. When you have thought about this, consider why this line might not be quite right.

[Mellihoney Michael]

many thanks...