Http post Error

static String deviceID="30000000",controllerDeviceID="null",partnerMode=null,phoneNumber="9578010375",phoneOS="ICS",phoneModel="MotoG",createdOn="124566",status="Active";

Details details;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

HttpAsyncTask h=new HttpAsyncTask();

h.execute();

}

public static String POST(String url)

{

InputStream inputStream=null;

String json = "";

String result=null;

try {

HttpClient httpClient=new DefaultHttpClient();

HttpPost httpPost=new HttpPost(url);

JSONObject jsonObject = new JSONObject();

jsonObject.accumulate("DeviceID",deviceID);

jsonObject.accumulate("ControllerPhoneNumber",controllerDeviceID);

jsonObject.accumulate("PhoneNumber",phoneNumber);

jsonObject.accumulate("DeviceOS",phoneOS);

jsonObject.accumulate("DeviceModel",phoneModel);

json=jsonObject.toString();

StringEntity se=new StringEntity(json);

httpPost.setEntity(se);

se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

httpPost.setHeader("Accept", "application/json");

httpPost.setHeader("Content-type", "application/json");

HttpResponse httpResponse = httpClient.execute(httpPost);

se.setContentEncoding(HTTP.UTF_8);

inputStream = httpResponse.getEntity().getContent();

Log.d("OUTPUT",httpResponse.getStatusLine().toString());

if (inputStream!=null)

result=convertInputStreamToString(inputStream);

else

result="Did not work";

}

catch (Exception e)

{

Log.v("InputStream",e.getLocalizedMessage());

}

return result;

}

private class HttpAsyncTask extends AsyncTask

{

@Override

protected String doInBackground(String... urls) {

POST(url);

return null;

}

@Override

protected void onPostExecute(String result)

{

Toast.makeText(getBaseContext(), "Data Sent!", Toast.LENGTH_LONG).show();

}

}

private static String convertInputStreamToString(InputStream inputStream) throws IOException {

BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream));

String line = "";

String result = "";

while((line = bufferedReader.readLine()) != null)

result += line;

inputStream.close();

return result;

}