Spring Boot - REST Controller

1@RestController
2@RequestMapping("/api/users")
3public class UserController {
4    private final UserService userService;
5 
6    @Autowired
7    public UserController(UserService userService) {
8        this.userService = userService;
9    }
10 
11    @GetMapping("/{id}")
12    public ResponseEntity<User> getUser(@PathVariable Long id) {
13        return userService.findById(id)
14            .map(ResponseEntity::ok)
15            .orElse(ResponseEntity.notFound().build());
16    }
17 
18    @PostMapping
19    public ResponseEntity<User> createUser(@RequestBody @Valid User user) {
20        User created = userService.save(user);
21        return ResponseEntity.status(HttpStatus.CREATED).body(created);
22    }
23}