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 Resource resource = resourceLoader.getResource("classpath:json/book.json");
ObjectMapper mapper = new ObjectMapper();
Object myObjects = mapper.readValue(json, Object.class)

String jsonCarArray = 
  "[{ \"color\" : \"Black\", \"type\" : \"BMW\" }, { \"color\" : \"Red\", \"type\" : \"FIAT\" }]";
ObjectMapper objectMapper = new ObjectMapper();
List<Car> listCar = objectMapper.readValue(jsonCarArray, new TypeReference<List<Car>>(){});
// print cars