winneryong

梦魇

test code highlight

hello
1

private static void showAllDatas(EntityManagerFactory emf) {
2

EntityManager em = emf.createEntityManager();
3

em.getTransaction().begin();
4

List < Teacher > allTeachers = em.createQuery(
5

" select teacher from Teacher teacher " ).getResultList();
6

for ( int i = 0 ; i < allTeachers.size(); i ++ ) {
7

Teacher teacher = allTeachers.get(i);
8

System.out.println(teacher);
9

for ( int j = 0 ; j < teacher.getStudents().size(); j ++ ) {
10

System.out.println( " " + teacher.getStudents().get(j));
11

}
12

}
13

em.getTransaction().commit();
14

em.close();
15

}

posted on 2006-07-26 10:52 爱生活爱JAVA 阅读(83) 评论(0) 编辑收藏所属分类: Core Java