Assuming I have a POJO like this: public static class Test { private Optional<String> something; } And a Jackson mapper like this: var OBJECT_MAPPER = JsonMapper.builder() .addModule(new Jdk8Module()) .serializationInclusion(JsonInclude.Include.NON_ABSENT) .build(); If I deserialize the JSON string {"something": null}, I get…
I'm so stuck with my beginner coding project. Editor placeholder in source file error need to unwrap optional string My app is a fitness tracker just to track PB's but I can't get it, to store the values inputted once…
I have a REST Controller @GetMapping("/getByClientId/{clientId}") public ResponseEntity<Optional<List<EquityFeeds>>> getByClientId(@PathVariable("clientId") final String clientId) { Optional<List<EquityFeeds>> cId = Optional.ofNullable(equityFeedsService.findByClientId(clientId)); System.out.println("Client Id: "+cId); if(cId.isPresent()) { return ResponseEntity.ok(cId); } else { cId.orElseThrow(() -> new ClientIdNotFoundException(clientId)); } return ResponseEntity.ok(cId); } Service Class Code: public List<EquityFeeds>…