try{
        MessageFactory messageFactory = MessageFactory.newInstance();
    soapMessage = messageFactory.createMessage();
    SOAPPart soapPart = soapMessage.getSOAPPart();
    SOAPEnvelope envelope = soapPart.getEnvelope();

    SOAPHeader soapHeader = soapMessage.getSOAPHeader();
    System.out.println("****: "+soapHeader);
          //if no header, add one
    if (soapHeader == null){
        System.out.println("in if");
        soapHeader = envelope.getHeader();
    }
    Name qname = envelope.createName("Security", "wsse", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
    SOAPHeaderElement security = soapHeader.addHeaderElement(qname);

    security.addAttribute(new QName("xmlns:wsu"), "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
   // SOAPElement security = soapHeader.addChildElement("Security", "wsse", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
    security.setMustUnderstand(true);
    SOAPElement usernameToken = security.addChildElement("UsernameToken", "wsse");

   usernameToken.setAttribute("wsu:Id","UsernameToken-123" );

    SOAPElement username = usernameToken.addChildElement("Username", "wsse");
    username.addTextNode("*****");

    SOAPElement password = usernameToken.addChildElement("Password", "wsse");
    password.setAttribute("Type", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText");
    password.addTextNode("****");

   SOAPElement nonce = usernameToken.addChildElement("Nonce", "wsse");
   nonce.setAttribute("EncodingType", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary");
   nonce.setValue("8nfdG22JxQVy+Yfndty9Yw==");

   SOAPElement created = usernameToken.addChildElement("Created", "wsse");
   SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
   Calendar c1 = Calendar.getInstance();
   created.setValue("2016-09-12T11:27:13.615Z");