Adding zero behind number

new Response.Listener<String>() {
                   @Override
                   public void onResponse(String response) {
                       try {
                           JSONObject obj = new JSONObject(response);
                           JSONArray movieArray = obj.getJSONArray("data");

                           ///get last data only///
                           for (int i = 0; i < movieArray.length(); i++) {
                               JSONObject movieObject = movieArray.getJSONObject(i);
                               getNo_pengajuan_full nomor = new getNo_pengajuan_full(
                                       movieObject.getInt("no_pengajuan_khusus"));
                               no_pengajuan.add(nomor);
                           }
                           getNo_pengajuan_full item = no_pengajuan.get(no_pengajuan.size() - 1);

                               nopengajuan.setText(String.valueOf(item.getNo_pengajuan_full() + 1));
                               hideDialog();

                       } catch (JSONException e) {
                           e.printStackTrace();
                       }
                   }

nopengajuan.setText(String.valueOf("0" + item.getNo_pengajuan_full() + 1));