1234567
            
@Repository
public class UserRepository {
    // Method to find a user by their ID
    public User findById(Long id) {
        // Logic to retrieve the user from the database
    }
}

              
1234567
            
@Service
public class UserService {
    // Method to retrieve a user by their ID
    public User getUserById(Long id) {
        // Logic to get the user by ID
    }
}

              
12345678
            
@Controller
public class HomeController {

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String home() {
        // code
    }
}

              
12345678
            
@Controller
public class HomeController {

    @GetMapping("/home")
    public String home() {
        // code 
    }
}

              
12345678
            
@Controller
public class WelcomeController {

    @GetMapping("/home")
    public String welcomeUser(@RequestParam(name = "name") String name) {
        // code
    }
}

              
12345
            
@GetMapping("/home")
public String getUserInfo(@RequestParam String name, @RequestParam int age) {
    // Logic to handle the request using 'name' and 'age' parameters
    return "User Name: " + name + ", Age: " + age;
}

              
12345678
            
@Controller
public class UserController {

    @GetMapping("/user/{id}")
    public String getUser(@PathVariable("id") Long userId) {
        // code
    }
}