JSONArray data = new JSONArray(); //create data from this -> [{"thumb_url":"tb-1370913834.jpg","event_id":...}]
List<JSONObject> list = data.stream().map(o -> (JSONObject) o).collect(Collectors.toList());
List<Employee> list = mapper.readValue(jsonString,
TypeFactory.defaultInstance().constructCollectionType(List.class,
Employee.class));
String userJson = "[{'name': 'Alex','id': 1}, "
+ "{'name': 'Brian','id':2}, "
+ "{'name': 'Charles','id': 3}]";
Gson gson = new Gson();
User[] userArray = gson.fromJson(userJson, User[].class);
for(User user : userArray) {
System.out.println(user);
}