ATM是Automatic Teller Machine的缩写，意为自动取款机。随着计算机技术的迅速发展，其应用已渗入到各个地区并发挥越来越重要的作用。ATM自动取款机系统向用户提供一个方便，简单，及时，随时随地存取款的计算机网络设备。本模拟系统采用JAVA面向对象语言思想实现了具有取款，存款，转账，密码修改等功能，并且在安全性及精确性方面有一定的涉及。该系统可以大大提高工作效率和精确度，节约人力资源的开销。-ATM　is short for Automatic Teller Machine.With the rapid development of computer technology,its application has penetrated into various areas and play a more and more important role.ATM system to provide customers with a convenient,simple,in a timely manner,different computer network equipment anytime and anymore.This simulation system uses java object-oriented language thought realized with withdrawals,deposits,transfers,password changes, and other functions,and has certain involved in safety and accuracy.The system can greatly improve the efficiency and precision,save the cost of human resources.