atm系统实现框架:1．编写工具类KB，实现系统接收用户输入这个动作。 2．定义普通客户类Customer，包括：使用构造函数初始化该类；存钱方法 saveMoney()；取钱方法getMoney()；查询卡上余额search()等。 3．编写主类BankTest，在此进入建立用户对象，进行帐号和密码验证 4．定义VIP客户类CustomerVip -atm system implementation fr a mework: 1. Writing tools KB, the system receives user input to achieve this action. 2. Definition of general customer class Customer, including: use the constructor to initialize the class　saving method saveMoney ()　withdrawals method getMoney ()　on inquiry card balance search () and so on. 3. Writing master class BankTest, create a user enters in this object ID and password verification carried out 4. VIP customers define class CustomerVip