Hibernate课程 初探一对多映射3-3 单向多对一的测试

public static void testManyToOne(){
        Student stu1 = new Student("小明","男");
        Student stu2 = new Student("小红","女");
        Grade grad1 = new Grade("java三班","java三班");
        stu1.setGrade(grad1);
        stu2.setGrade(grad1);
        Session ses1 = HibernateUtil.getSession();
        Transaction tran = ses1.beginTransaction();
        ses1.save(stu1);
        ses1.save(stu2);
        ses1.save(grad1);
        tran.commit();
        HibernateUtil.closeSession(ses1);
    }