• Implement UserService and UserDao

    public interface UserService {
        void add(User user);
    
        List<User> listUsers();
    }

• In the Main class configure ApplicationContext and show how you are saving User into DB and reading him back

• Configure DataSource

• Understand the main concepts of Spring framework:

  • ApplicationContext
  • Bean
  • Bean Autowiring
  • Difference between @Bean and @Autowired and @Qualifier
  • What does each annotation used in videos mean?

You can check yourself using this checklist