Spring аннотация Autowired

@Configuration
@ComponentScan(basePackages = "university.daoClasses")
public class ConfigFile {
 
    @Autowired
    DaoFactory daoFactory;
 
    @Bean
    public GenericDao<Student, Integer> studentDaoBean() throws UniversityException {
        return daoFactory.getStudentWithConnection(connectionBean());
    }
 
    @Bean
    public GenericDao<Subject, Integer> subjectDaoBean() throws UniversityException {
        return daoFactory.getSubjectWithConnection(connectionBean());
    }
 
    @Bean
    public GenericDao<Attend, Integer> attendDaoBean() throws UniversityException {
        return daoFactory.getAttendWithConnection(connectionBean());
    }
 
    @Bean
    public GenericDao<Rating, Integer> ratingDaoBean() throws UniversityException {
        return daoFactory.getRatingWithConnection(connectionBean());
    }
 
    @Bean
    public Connection connectionBean()throws UniversityException{
        return daoFactory.getConnection();
    }
 
}

@Bean
    public GenericDao<Student, Integer> studentDaoBean() throws UniversityException {
        return daoFactory.getStudentWithConnection(connectionBean());
    }

@Component
public class Tes {
 
    @Autowired
    private GenericDao<Student, Integer>studentDao;
 
    public static void main(String[] args) throws UniversityException {
 
        Tes tes=new Tes();
        for (Student s: tes.getList()){
            System.out.println(s);
        }
    }
 
    public List<Student> getList() throws UniversityException {
            return studentDao.getAll();
    }
}
 
/*
Exception in thread "main" java.lang.NullPointerException
    at servlets.universityServlets.Tes.getList(Tes.java:25)
    at servlets.universityServlets.Tes.main(Tes.java:19)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
 
Process finished with exit code 1
*/

public static void main(String[] args) throws UniversityException {
    ApplicationContext context = new AnnotationConfigApplicationContext(ConfigFile.class);
    Tes tes = context.getBean(Tes.class);
    List<Student> studentList = studentDao.getAll();
}