TT Information -5-Hibernate

1. Why use hibernate?
2. What is the ORM framework?
3, hibernate how to view sql statement printed in the console?
4, there are several ways to search for hibernate?
5, hibernate entity class may be defined as the final it?
6, Integer and int mapping in hibernate in doing what is the difference?
7, hibernate How does it work?
8, get () and load () of the difference?
9, talk about caching mechanism to hibernate?
10, hibernate objects which state?
11. What is the difference in hibernate in getCurrentSession and openSession is?
12, hibernate entity class must be no-argument constructor do? why?