ObjectMapper objectMapper = new ObjectMapper(); String json = objectMapper.writeValueAsString(object); MyObject myObject = objectMapper.readValue(json, MyObject.class); Gson gson = new Gson(); String json = gson.toJson(object); MyObject myObject = gson.fromJson(json, MyObject.class); String json = JSON.toJSONString(object); MyObject myObject = JSON.parseObject(json, MyObject.class); JSONObject jsonObject = JSONObject.fromObject(object); String json = jsonObject.toString(); MyObject myObject = (MyObject) JSONObject.toBean(jsonObject, MyObject.class);