list.get(0)为什么是null的?
List<User> list = (List<User>)this.getHibernateTemplate().find("from User u where u.userName=?",user.getUserName());
System.out.println(list != null);
System.out.println(list.size() > 0);
System.out.println(list.get(0));
结果是System.out.println(list != null); 结果是true;
System.out.println(list.size() > 0); 结果是1
System.out.println(list.get(0)); 结果是null
请问一下,为什么 (list != null)是ture,(list.size() > 0是1)但是 list.get(0)取出来却是null的?