这个系统的功能是模拟ATM机的登陆、查询余额、取款、更改密码等功能，利用了JDBC接口、SWING等。

如ATM的登陆、取款和更改密码都要利用JDBC接口与数据库连结，我遇到了很多问题，但最主要的就是数据库的设置问题，为了解决这个问题我看了四本书，查询相关的资料（累啊）。-the function of the system is simulated ATM machine landing, balance inquiries, withdrawals, change passwords, and other functions, use the JDBC interface, such as SWING. If ATM landing, withdrawals and change password must use JDBC interface and database links, I encountered a lot of problems, but the most important is that the database setting, in order to solve this problem, I read four books, Inquiries related information ('s burden).