InputStreamtoString

private static String streamToString(InputStream is) {
    BufferedReader reader =new BufferedReader(new InputStreamReader(is));
    StringBuilder sb =new StringBuilder();
    String line =null;
    try{
        while((line = reader.readLine()) != null) {
            sb.append(line);
        }
    }catch (IOException e) {
        e.printStackTrace();
    }finally {
        try{
            is.close();
        }catch (IOException e) {
            e.printStackTrace();
        }
    }
    return sb.toString();
}