winneryong

梦魇

test

public   static   void  main(String args) {
      EntityManager em  =  emf.createEntityManager();
        em.getTransaction().begin();
        List < Teacher >  allTeachers  =  em.createQuery(
                 " select teacher from Teacher teacher " ).getResultList();
         for  ( int  i  =   0 ; i  <  allTeachers.size(); i ++ )  {
            Teacher teacher  =  allTeachers.get(i);
            System.out.println(teacher);
             for  ( int  j  =   0 ; j  <  teacher.getStudents().size(); j ++ )  {
                System.out.println( "      "   +  teacher.getStudents().get(j));
            }
        }
        em.getTransaction().commit();
        em.close();
}

posted on 2006-07-26 10:43 爱生活爱JAVA 阅读(46) 评论(0)  编辑  收藏


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