private void parseWallpaperThumbnailJSON(ContainerList containerList) {
   Image blank = Image.createImage(50, 50);
   try {
     JSONObject jSONObject = new JSONObject(wallpaperUrlResponse);
     System.out.println(jSONObject);
     Enumeration e = jSONObject.keys();
     while (e.hasMoreElements()) {
       String key = (String) e.nextElement();
       //             System.out.println(key + " : " + jSONObject.getString(key));
       if (key.equalsIgnoreCase("wallpapers")) {
         JSONArray jSONArray = jSONObject.getJSONArray(key);
         for (int i = 0; i < jSONArray.length(); i++) {
           JSONObject wallpaper = jSONArray.getJSONObject(i);
           if (wallpaper.has("image_thumb_url")
               && wallpaper.has("image_category")
               && wallpaper.has("image_url")
               && wallpaper.has("wallpaper_price")) {
             // download the thumbnail and display it.
             Hashtable hashtable = new Hashtable();
             hashtable.put("wallpaperThumbnailURL", wallpaper.getString("image_thumb_url"));
             hashtable.put("wallpaperURL", wallpaper.get("image_url"));
             hashtable.put("wallpaperPrice", "Price: " + wallpaper.get("wallpaper_price"));
             hashtable.put("wallpaperIcon", blank);
             //                         final ImageDownloadService ids = new
             // ImageDownloadService(wallpaper.getString("image_thumb_url"), cmp,
             // resultVector.size() - 1, "wallpaperIcon") {
             //                             protected void handleException(Exception err) {
             //                                 if (err instanceof NullPointerException) {
             //                                     System.out.println("NULL POINTER EXCEPTION
             // CAUGHT");
             //                                     return;
             //                                 }
             //                                 super.handleException(err); //To change body of
             // generated methods, choose Tools | Templates.
             //                             }
             //                         };
             //                         NetworkManager.getInstance().addToQueue(ids);
           }
         }
       }
     }
   } catch (Exception ex) {
     System.out.println("error downloading images.");
     ex.printStackTrace();
     Dialog.show(null, "error downloading images", "OK", null);
   }
 }
  String postRequest(String url) {
    HttpConnection hc = null;
    DataInputStream in = null;
    OutputStream os = null;
    try {

      hc = (HttpConnection) Connector.open(url);
      hc.setRequestMethod(HttpConnection.POST);
      hc.setRequestProperty("username", "bng");
      hc.setRequestProperty("password", "123456");
      os = hc.openDataOutputStream();
      JSONObject jSONObject = new JSONObject();
      jSONObject.put("start_count", 1);
      jSONObject.put("end_count", 10);
      jSONObject.put("type", 1);
      //            os.write("{\"start_count\":\"1\",\"end_count\":\"12\"}".getBytes());
      os.write(jSONObject.toString().getBytes());
      // Always get the Response code first .
      int responseCode = hc.getResponseCode();
      if (responseCode == HttpConnection.HTTP_OK) {
        // You have successfully connected.
        int length = (int) hc.getLength();
        System.out.println("length : " + length);
        byte[] data = null;
        if (length != -1) {
          data = new byte[length];
          in = new DataInputStream(hc.openInputStream());
          in.readFully(data);
        } else {
          // If content length is not given, read in chunks.
          int chunkSize = 512;
          int index = 0;
          int readLength = 0;
          in = new DataInputStream(hc.openInputStream());
          data = new byte[chunkSize];
          do {
            if (data.length < index + chunkSize) {
              byte[] newData = new byte[index + chunkSize];
              System.arraycopy(data, 0, newData, 0, data.length);
              data = newData;
            }
            readLength = in.read(data, index, chunkSize);
            index += readLength;
          } while (readLength == chunkSize);
          length = index;
        }
        return new String(data);
        //                        Image image = Image.createImage(data, 0, length);
        //                        ImageItem imageItem = new ImageItem(null, image, 0, null);
        //                        mForm.append(imageItem);
        //                        mForm.setTitle("Done.");

      } else {
        // Problem with your connection
        Dialog.show(null, "error downloading images", "OK", null);
        return null;
      }
    } catch (Exception e) {
      e.printStackTrace();
      Dialog.show(null, "error downloading images", "OK", null);
      return null;
    } finally {
      if (in != null) {
        try {
          in.close();
        } catch (IOException ex) {
          ex.printStackTrace();
        }
      }
      if (os != null) {
        try {
          os.close();
        } catch (IOException ex) {
          ex.printStackTrace();
        }
      }
      if (hc != null) {
        try {
          hc.close();
        } catch (IOException ex) {
          ex.printStackTrace();
        }
      }
    }
  }