HTTP call using "Destination" does not return InputStream

Context ctx = new InitialContext();
DestinationService dstService = (DestinationService)ctx.lookup(DestinationService.JNDI_KEY);
if (dstService == null){
throw new NamingException("Destination Service not available");
}
Destination destination = dstService.getDestination("HTTP","MII_HTTP");

HTTPDestination httpDestination = (HTTPDestination) destination;

httpDestination.setUrl(
"http://msplsa101.corp.medtronic.com:52000/XMII/Runner?Transaction=Default/Soumen/SendFile&FileName=abc.txt&FilePath=&OutputParameter=OutputXML");
HttpURLConnection httpConnection1 = httpDestination.getURLConnection("GET");

int responseCode = httpConnection1.getResponseCode();

  StringBuffer inputLine1 = new StringBuffer();
String input1 = "";
InputStream inputStream1 = httpConnection1.getInputStream();
BufferedReader bufferedReader1 = new BufferedReader(new InputStreamReader(inputStream1));
while ((input1 = bufferedReader1.readLine()) != null) {
inputLine1.append(input1);
}
bufferedReader1.close();

URL url = new URL("http://msplsa101.corp.medtronic.com:52000/XMII/Runner?Transaction=Default/Soumen/SendFile&FileName=abc.txt&FilePath=&OutputParameter=OutputXML");
HttpURLConnection httpConnection2 = (HttpURLConnection)url.openConnection();

httpConnection2.setRequestMethod("GET");
httpConnection2.connect();
StringBuffer inputLine2 = new StringBuffer();
String input2 = "";
InputStream inputStream2 = httpConnection2.getInputStream();