public static void main(String[] argv) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setValidating(false);
    dbf.setNamespaceAware(true);
    dbf.setIgnoringComments(false);
    dbf.setIgnoringElementContentWhitespace(false);
    dbf.setExpandEntityReferences(false);
    DocumentBuilder db = dbf.newDocumentBuilder();
    Document doc = db.parse(new InputSource(new StringReader("<table border="1">    <tbody><tr><td colspan="1" rowspan="1"><br>OrganizationY</br></td><td colspan="1" rowspan="1">Company</td></tr><tr><td>(//no content here.so want delete this td)</td><td></td></tr><tr><td>Synerzip</td><td>Rezoomex</td></tr></tbody></table>)));
    Element element = doc.getDocumentElement();
    printElement(element, "");
    TransformerFactory transformerFactory = TransformerFactory.newInstance();
    Transformer transformer = transformerFactory.newTransformer();
    DOMSource source = new DOMSource(doc);
    StreamResult result = new StreamResult(new File("clean.html"));
    transformer.transform(source, result);
}

static void printElement(Element element, String indent) {
    List<Element> toRemove = new LinkedList<Element>();
    if (element == null) return;
    System.out.println("Element '" + element.getNodeName() + "'");
    NodeList children = element.getChildNodes();
    System.out.println("child :::::::" + children);
    for (int i = 0; i < children.getLength(); i++) {
        Node child = children.item(i);
        switch (child.getNodeType()) {
            case Node.ELEMENT_NODE:
                printElement((Element) child, indent + "t");
                break;
            case Node.ATTRIBUTE_NODE:
                Attr attr = (Attr) child;
                System.out.println("tAttribute: '" + attr.getName() + "' = '" + attr.getValue() + "'");
                break;
            case Node.TEXT_NODE:
                Text text = (Text) child;
                System.out.println("tText: '" + text.getData() + "'");
                if(text.getLength() <= 1) {
                    Element childElement = child; // not able to cast it . if I did (element)child. Then it is not giving me expected output.
                    System.out.println(":Child element ::::::"+elementIsRedundant(element));
                    printElement(childElement,"");
                   if (elementIsRedundant(childElement)) {
                        toRemove.add(childElement);
                    }
                }
                break;
            default:
                System.out.println("tUnknown node type: '" + child.getNodeType() + "'");
                break;
        }
    }
}

 private static boolean elementIsRedundant(Element element) {
if (element.hasAttributes())
  return false;
if (!element.hasChildNodes())
  return true;
NodeList children = element.getChildNodes();
int childrenCount = children.getLength();
for (int i = 0; i < childrenCount; ++i) {
  Node child = children.item(i);
  String value = child.getNodeValue();
  if (value != null && !value.matches("\s*")) {
    return false; // Found non-whitespace text
  }
}
return true;