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(57) 评论(0) 编辑收藏

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