Java フレームワークは他のテクノロジーとどのように統合されますか?

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.web.bind.annotation.*;

@SpringBootApplication
public class SpringBootMysqlApp { public static void main(String[] args) { SpringApplication.run(SpringBootMysqlApp.class, args); } }

interface UserRepository extends JpaRepository<User, Long> {}

@RestController
@RequestMapping("/users")
class UserController {
    private UserRepository userRepository;
    public UserController(UserRepository userRepository) { this.userRepository = userRepository; }

    @GetMapping
    public Iterable<User> getAllUsers() { return userRepository.findAll(); }

    @PostMapping
    public User createUser(@RequestBody User user) { return userRepository.save(user); }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
public class SpringBootRestApiApp { public static void main(String[] args) { SpringApplication.run(SpringBootRestApiApp.class, args); } }

@RestController
@RequestMapping("/api")
class RestApiController {
    private RestTemplate restTemplate;
    public RestApiController(RestTemplate restTemplate) { this.restTemplate = restTemplate; }

    @GetMapping
    public String makeApiCall() { return restTemplate.getForObject("https://example.com/api/v1", String.class); }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.annotation.Input;
import org.springframework.messaging.SubscribableChannel;

@SpringBootApplication
@EnableBinding(KafkaChannels.class)
public class SpringCloudKafkaApp { public static void main(String[] args) { SpringApplication.run(SpringCloudKafkaApp.class, args); } }

interface KafkaChannels {
    @Input("inputChannel")
    SubscribableChannel inboundMessage();
}