Hashing the passwords of new users

If we tried running the application and creating a new user, we would not be able to log in. This is because the newly-created user's password would not be hashed. We need to update DefaultCalendarService to hash the password. Make the following updates to ensure that the newly-created users' passwords are hashed:

    //src/main/java/com/packtpub/springsecurity/service/DefaultCalendarService.java

    import org.springframework.security.authentication.encoding.PasswordEncoder;
    // other imports omitted
    public class DefaultCalendarService implements CalendarService {
       ...
       private final PasswordEncoder passwordEncoder;
       @Autowired
       public DefaultCalendarService(EventDao eventDao, 
       CalendarUserDao userDao, JdbcOperations jdbcOperations, 
       PasswordEncoder passwordEncoder) {
       ...
       this.passwordEncoder = passwordEncoder;
       }
       ...
       public int createUser(CalendarUser user) {
           String encodedPassword = passwordEncoder.
           encodePassword(user.getPassword(), null);
           user.setPassword(encodedPassword);

           ...
          return userId;
       }
    }