Android java ArrayList Object

Trying to educate myself from a sample Android app in Android Studio, I have found an ArrayList<String>.
In the debugging mode, the value(s) of this array is as below (using the view tool of the IDE)
I don't really understand how to recognize each element of the array.
I would appreciate any help.

The list is constructed as below (from a JSON file).

public static List<ArrayList<String>> getPrintDataFromJson(Context context, String jsonFileName, int copies, float multiple) { try { String jsonContent = AssetJsonReader.readJsonFromAssets(context, jsonFileName, error -> Log.e(TAG, "Json not found: " + jsonFileName + ", error: " + error)); if (jsonContent == null || jsonContent.isEmpty()) { Log.e(TAG, "JSON is empty: " + jsonFileName); return null; } return parseJsonToPrintData(jsonContent, copies, multiple); } catch (Exception e) { Log.e(TAG, "Cannot get data from Json: " + jsonFileName, e); return null; } }

and...

private static List<ArrayList<String>> parseJsonToPrintData(String jsonContent, int copies, float multiple) { try { List<PrintTemplate> templates = null; try { PrintTemplate[] templateArray = JsonProcessor.GSON_INSTANCE.fromJson(jsonContent, PrintTemplate[].class); if (templateArray != null && templateArray.length > 0) { templates = new ArrayList<>(); Collections.addAll(templates, templateArray); } } catch (Exception e) { try { PrintTemplate template = JsonProcessor.GSON_INSTANCE.fromJson(jsonContent, PrintTemplate.class); if (template != null) { templates = new ArrayList<>(); templates.add(template); } } catch (Exception ex) { Log.e(TAG, "Unable to parse JSON as a PrintTemplate object or array", ex); return null; } } if (templates == null || templates.isEmpty()) { Log.e(TAG, "There is no valid template data in the JSON."); return null; } List<String> processedJsonData = JsonProcessor.processTemplateList(templates); int templateLength = templates.size(); List<PrinterImageProcessingInfoWrapper> infoWrappers = new ArrayList<>(); for (int i = 0; i < templateLength; i++) { infoWrappers.add(createPrinterImageProcessingInfoWrapper(templates.get(i), copies, multiple)); } List<String> processedInfoData = JsonProcessor.processInfoWrapperList(infoWrappers); List<ArrayList<String>> printData = new ArrayList<>(); printData.add(new ArrayList<>(processedJsonData)); printData.add(new ArrayList<>(processedInfoData)); return printData; } catch (JsonSyntaxException e) { Log.e(TAG, "JSON syntax error", e); return null; } catch (Exception e) { Log.e(TAG, "Parsing JSON content failed to print data", e); return null; } }

and the result in the list is as below.

{ "width" : 40.0, "height" : 20.0, "rotate" : 0, "background" : "", "backgroundImage" : "", "elements" : [ { "type" : "barcode", "x" : 2.0, "y" : 2.0, "width" : 36.0, "height" : 16.0, "rotate" : 0, "codeType" : 20, "value" : "6942141752896", "fontSize" : 3.200000047683716, "textHeight" : 3.200000047683716, "textPosition" : 0, "zIndex" : 0, "isTitle" : 0 },{ "type" : "text", "x" : 2.0, "y" : 2.0, "width" : 36.0, "height" : 7.400000095367432, "rotate" : 0, "value" : "Certificate", "fontCode" : "", "fontFamily" : "", "fontSize" : 5.599999904632568, "textAlignHorizonral" : 1, "textAlignVertical" : 1, "lineMode" : 9, "letterSpacing" : 0.0, "lineSpacing" : 1.0, "typesettingMode" : 1, "colorReverse" : 0, "zIndex" : 101, "wordSpacing" : 0, "lineBreakMode" : 1, "isTitle" : 0, "fontStyle" : [ "bold" ] } ]