Sample http request.

public static void main(String[] args) {
        System.out.println("Hello World let us make a sample request.!");

        String uri = "http://pehcs.invalidbyte.com/pehcs/pos/ws?" + "vi=2135&op=cv&connid=1490778490localhost0.77894629517472";
        System.out.println("the response is this: " + sendGetRequest(uri)) ;

    }

    public static String sendGetRequest(String uri) {
        try {
            URL url = new URL(uri);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));

            String result;

            StringBuilder sb = new StringBuilder();

            while ((result = bufferedReader.readLine()) != null) {
                sb.append(result);
            }

            return sb.toString();
        } catch (Exception e) {
            System.out.println("An error occured: " + e.getMessage());
            e.printStackTrace();
        }

        return null ;
    }