HttpURLConnection con = (HttpURLConnection) new URL ("http://localhost:8080/engineerproject/webresources/CategoryService/categories").openConnection();
            BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
            System.out.println("Readline" + br.readLine());
//             List<CategoryApi> lista =  new Gson().fromJson(br.readLine(), new TypeToken<List<CategoryApi>>(){}.getType());
             CategoryApi obj =  new Gson().fromJson(br.readLine(), CategoryApi.class);