test code highlight

爱生活爱JAVA — Wed, 26 Jul 2006 02:52:00 GMT

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     }

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BlogJava-winneryong-随笔分类-Core Java

test code highlight