Removing Nodes completely when a specific child element is found

I need to remove the node/nodes completely when a specific child element is found in nodes of XML For Instance, My XML is as follows:

<?xml version="1.0"?>
<booklist>
 <book>
     <name>THEORY OF DYNAMICS</name>
     <author>JOHN</author>
     <price>09786</price>
 </book>
 <book>
     <name>ABCD</name>
     <author>STACEY</author>
     <price>765</price>
 </book>
 <book>
     <name>ABCD</name>
     <author>BTYSON</author>
     <price>34974</price>
 </book>
 <book>
     <name>ABCD</name>
     <author>CTYSON</author>
     <price>09534</price>
 </book>
 <book>
     <name>INTRODUCING JAVA</name>
     <author>CHARLES</author>
     <price>1234</price>
 </book>
 <book>
     <name>ABCD</name>
     <author>TYSON</author>
     <price>34534</price>
 </book>

So,When i search for book tag ='ABCD' my result should be as follows:

OUTPUT XML:

<?xml version="1.0"?>
<booklist>
 <book>
     <name>THEORY OF DYNAMICS</name>
     <author>JOHN</author>
     <price>09786</price>
 </book>
  <book>
     <name>INTRODUCING JAVA</name>
     <author>CHARLES</author>
     <price>1234</price>
 </book>

The code which i tried is as follows:

 try {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = factory.newDocumentBuilder();
        Document doc = docBuilder.parse(new File(FILENAME));
        NodeList list = doc.getElementsByTagName("*");
        for (int i = 0; i <list.getLength(); i++) {

            Node node = (Node) list.item(i);
            // Searching through entire file
            if (node.getNodeName().equalsIgnoreCase("book")) {
                NodeList childList = node.getChildNodes();
                // Looking thhrough all children nodes
                for (int x = 0; x < childList.getLength(); x++) {
                    Node child = (Node) childList.item(x);
                    // To search only "book" children
                    if (child.getNodeType() == Node.ELEMENT_NODE &&  
                  child.getNodeName().equalsIgnoreCase("name") && 
          child.getTextContent().toUpperCase().equalsIgnoreCase("abcd".toUpperCase())) {
                        // Delete node here
                        node.getParentNode().removeChild(node);
                    }
                }
            }
        }
        try {
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        DOMParser parser = new DOMParser();
        parser.parse(FILENAME);                       
        DOMSource source = new DOMSource(doc);
        StreamResult result = new StreamResult(new File(NEWFILE));
        transformer.transform(source, result);
        } catch (IOException io) {
            io.printStackTrace();

        }
    } catch (ParserConfigurationException pce) {
        pce.printStackTrace();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (SAXException saxe) {
        saxe.printStackTrace();
    }

I'm unable to delete all the book nodes which has child element as "abcd" , Instead am able to delete only few alternative book nodes which has child element as "abcd". Can you suggest me what is the mistake in my code? Why am i unable to delete all the book nodes whose name='abcd'?