public Student getStudentById(Long id) throws SQLException {
            Session session = null;
            Student stud = null;
            try {
                session = HibernateUtil.getSessionFactory().openSession();
                stud = (Student) session.load(Student.class, id);
            } catch (Exception e) {
                JOptionPane.showMessageDialog(null, e.getMessage(), "Ошибка I/O", JOptionPane.OK_OPTION);
            } finally {
                if (session != null && session.isOpen()) {
                    session.close();
                }
            }
            return stud;
      }

      public List<Student> getAllStudents() throws SQLException {
            Session session = null;
            List<Student> studs = new ArrayList<Student>();
            try {
                session = HibernateUtil.getSessionFactory().openSession();
                studs = session.createCriteria(Student.class).list();
            } catch (Exception e) {
                JOptionPane.showMessageDialog(null, e.getMessage(), "Ошибка I/O", JOptionPane.OK_OPTION);
            } finally {
                if (session != null && session.isOpen()) {
                    session.close();
                }
            }
            return studs;
      }

List<Student> studs = Factory.getInstance().getStudentDAO().getAllStudents();
        System.out.println("========Все студенты=========");
        for(int i = 0; i < studs.size(); ++i) {
                System.out.println("Имя студента : " + studs.get(i).getName();             
        } 

Student st = Factory.getInstance().getStudentDAO().getStudentById(new Long(1));
System.out.println("Имя студента : " + st.getName());   

List<Student> studs = Factory.getInstance().getStudentDAO().getAllStudents();
        System.out.println("========Все студенты=========");
        for(int i = 0; i < studs.size(); ++i) {
                System.out.println("Имя студента : " + studs.get(i).getName();             
        }