Spring Nested Property binding and configuration injection example

AllStudentConfig.java

@Configuration
@ConfigurationProperties(prefix = "student")
public class AllStudentConfig {

    @Setter @Getter
    private StudentProperties younghee;
  
    @Setter @Getter
    private StudentProperties chulsoo;


    public static final String CHULSOO_HOBBY = "sleeping";
    public static final String YOUNGHEE_HOBBY = "eating";

    @Primary
    @Bean(name = "chulsoo")
    public StudentProperties chulsooConfig() {
        StudentProperties chulsooConfig = this.chulsoo;
        chulsooConfig.setHobby(CULSOO_HOBBY)
        return chulsooConfig;
    }

    @Bean(name = "younghee")
    public StudentProperties youngheeConfig() {
        StudentProperties youngheeConfig = this.telaria;
        youngheeConfig.setHobby(YOUNGHEE_HOBBY)
        return youngheeConfig;
    }

    @Data
    @NoArgsConstructor(access = AccessLevel.PUBLIC)
    public static class StudentProperties {
      
        private int age;

        private String grade;

        private String school;

        private String hobby;

    }

}

application.yml

  student:
    chulsoo:
      age: 30
      grade: 1
      school: 'awesome school'
    younghee:
      age: 31
      grade: 1
      school: 'very cool school'

SchoolService.java

@Service
@Slf4j
class SchoolService {
  
      private StudentProperties younghee;
  
      private StudentProperties chulsoo;
      
      @Autowired
      public SchoolService(@Qualifier("younghee") StduentProperties youngheeProp, @Qualifier("chulsoo") StduentProperties chulsooProp) {
        this.younghee = youngheeProp;
        this.chulsoo = chulsooProp;
      }
}