json to array conversion

gistfile1.java

GsonBuilder gsonBuilder = new GsonBuilder();
Gson inputGson = new Gson();
ArrayList<ArrayList<String>> list = inputGson.fromJson(json, ArrayList.class);
Coordinate[] coordinates = new Coordinate[list.size()];

for (int i = 0; i < list.size(); i++) {
	coordinates[i] = new Coordinate(Double.parseDouble(list.get(i).get(0)), Double.parseDouble(list.get(i).get(1)));
}