ATM

package com.lovo.atmoo.bean;

import java.util.Scanner;

public class ATMachine {

private UserBean theUser;//ATM中记录的用户信息

private int cash;//现金

public final int MAX_CASH = 200000;

public ATMachine(){
//创建假的预存数据
this.theUser = new UserBean("J142","123456",110);
this.cash = 100000;

this.run();
}

//运行---控制ATM运行流程的
private void run(){
this.welcome();
boolean flag = this.login();
if(flag){
while(true){
int choice = this.chooseMenu();
switch(choice){
case 1:
this.query();
break;
case 2:
this.getMoney();
break;
case 3:
this.storeMoney();
break;
case 4:
this.changePwd();
break;
case 5:
this.exit();
break;
default:
System.out.println("没有该选项，请仔细读取提示信息。");
break;
}
}
}else{
System.out.println("三次登录失败，您的卡被没收。");
System.out.println("请持有效证件到柜台处理！");
}
}

private void welcome(){
System.out.println("**********************************");
System.out.println("**************ICBC银行************");
System.out.println("**********************************");
System.out.println("**********************************");
System.out.println("*********************version1.0****");
System.out.println("**********************************");
}

private boolean login(){
for(int i = 0; i < 3; i++){
Scanner scan = new Scanner(System.in);
System.out.println("请输入卡号：");
String inputCardNum = scan.nextLine();
System.out.println("请输入密码：");
String inputPwd = scan.nextLine();
if(inputCardNum.equals(this.theUser.getCardNum()) &&
inputPwd.equals(this.theUser.getPassword())){
System.out.println("欢迎你，"+ inputCardNum + "，登录成功！");
return true;
}else{
System.out.println("卡号密码有误，请查证！你还有" + (2 - i) + "次机会！");
}

}
return false;
}

private int chooseMenu(){
Scanner scan = new Scanner(System.in);
System.out.println("请选择您要执行的操作：");
System.out.println("1、查询余额；2、取款；3、存款；4、修改密码；5、退出");
int choice = scan.nextInt();
return choice;
}

private void query(){
System.out.println("您当前的余额是：" + this.theUser.getAccount() + "元。");
}

private double storeMoney(){
Scanner scan = new Scanner(System.in);
System.out.println("请输入您要存入的金额：");
int inputMoney = scan.nextInt();
cash=cash+inputMoney;
if(cash <= 200000){
double account = this.theUser.getAccount()+inputMoney;
System.out.println("你的余额为："+account);
return this.theUser.account=account;
}else{
System.out.println("你的存入金额过大！");
}
return this.theUser.account;
}

private double getMoney(){
Scanner scan = new Scanner(System.in);
System.out.println("请输入您要取出的金额：");
int inputMoney = scan.nextInt();
cash=cash-inputMoney;
if(cash>=0){
double account = this.theUser.getAccount()-inputMoney;
System.out.println("你的余额为："+account);
return this.theUser.account=account;
}
if(cash<0){
System.out.println("对不起，该ATM机器余额不足，无法取款！");
}
return this.theUser.account;
}

private void changePwd(){
Scanner scan = new Scanner(System.in);
System.out.println("请输入你的旧密码");
String str = scan.next();
if(str.equals("123456")){
System.out.println("请输入新的密码：");
String str1 = scan.next();
System.out.println("请再次输入新的密码：");
String str2 = scan.next();
if(str1.equals(str2)){
System.out.println("恭喜你，密码修改成功！");
}else{
System.out.println("密码修改失败！");
}
}else{
System.out.println("你的密码输入有误！");
}
}

private void exit(){
System.out.println("谢谢您的使用，期待下次再为您服务！");
System.exit(0);
}

}

ATM

原文：http://www.cnblogs.com/HP-huoshaoxiu/p/6828151.html