java模拟实现银行ATM机操作
作者:JAVA_NO.1 时间:2021-09-03 04:28:11
java模拟银行ATM机操作(基础版),供大家参考,具体内容如下
实现的功能需求:
修改密码之后,就会自动退出登录,再重新登录,若登录成功才能验证修改密码成功,这里用到 【跳出指定循环】, 其他功能都是基本操作,作为入门入手程序。
准备两个实体类(一个银行类,一个用户类),一个测试类,注意,这里暂且存储了两个用户,这里可以优化,暂且不优化了
Blank.java
package com.demo2;
public class Blank {
/*数组模拟数据库后台,并初始化*/
private User[] users = new User[20];
int size;
/*接收当前登录的用户*/
User user;
public User getUser() {
return user;
}
public Blank (){ }
/*初始化用户*/
public void init(){
User user1= new User("890012","43042419990201","刘军","7519","15116497809","18000");
User user2= new User("890013","43042419990821","一凡","1314","118842320","13000");
/*初始化*/
users[0] = user1;
users[1] =user2;
size=2;
}
/*用户登录*/
public boolean login(String cardNo, String passwd){
for(int i=0; i<size; i++){
if(users[i].getCardNo().equals(cardNo) && users[i].getPasswd().equals(passwd) ){
user = users[i];
return true;
}
}
return false;
}
/*存款*/
public void save(String balance){
int money =Integer.parseInt(user.getBalance());
money += Integer.parseInt(balance);
user.setBalance((money+""));
System.out.println("存款成功");
}
/*取款*/
public void widthDraw(String balance){
int money =Integer.parseInt(user.getBalance());
money -= Integer.parseInt(balance);
user.setBalance((money+""));
}
/*转账*/
public void trans(String cardNo,String balance){
int i=0;
for(i=0; i<size;i++){
if(users[i].getCardNo().equals(cardNo)){
/*保存没转账之前的数*/
int oldmoney =Integer.parseInt(user.getBalance()) ;
int oldanothermoney = Integer.parseInt(users[i].getBalance());
/*转账,调用当前登录用户的取款方法*/
widthDraw(balance);
/*目标账户的余额变化*/
int money =Integer.parseInt(users[i].getBalance());
money += Integer.parseInt(balance);
users[i].setBalance((money+""));
/*这里做转账成功的判断*/
int userseflmoney =oldmoney - Integer.parseInt(user.getBalance());
int useraothermoney = Integer.parseInt(users[i].getBalance())-oldanothermoney;
if(userseflmoney == useraothermoney){
System.out.println("转账成功");
}
break;
}
}
if(i>=size){
System.out.println("输入的卡号有误");
}
}
/*查询余额*/
public void query(){
System.out.println("【账户余额】: "+user.getBalance());
}
/*修改密码*/
public void modifyPassword(String passwd){
user.setPasswd(passwd);
System.out.println("修改密码成功,请重新登录");
}
}
User.java
package com.demo2;
public class User {
private String cardNo ;
private String identity;
private String username;
private String passwd;
private String phone;
private String balance;
public User(){}
public User(String cardNo, String identity, String username, String passwd, String phone, String balance) {
this.cardNo = cardNo;
this.identity = identity;
this.username = username;
this.passwd = passwd;
this.phone = phone;
this.balance = balance;
}
public String getCardNo() {
return cardNo;
}
public void setCardNo(String cardNo) {
this.cardNo = cardNo;
}
public String getIdentity() {
return identity;
}
public void setIdentity(String identity) {
this.identity = identity;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPasswd() {
return passwd;
}
public void setPasswd(String passwd) {
this.passwd = passwd;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getBalance() {
return balance;
}
public void setBalance(String balance) {
this.balance = balance;
}
}
BlankTest.java
package com.demo2;
import java.util.Scanner;
public class BankTest {
public static void main(String[] args) {
Blank blank = new Blank();
/*初始化*/
blank.init();
Scanner sc =new Scanner(System.in);
while(true) {
System.out.println("========== 中国银行欢迎你 ========= ");
System.out.println(" 【请先登录】 ");
System.out.print("【请输入卡号】:");
String carNo = sc.next();
System.out.print("【请输入密码】:");
String passwd = sc.next();
if (blank.login(carNo, passwd)) {
System.out.println("登录成功: 【账号:欢迎】:"+ blank.getUser().getUsername());
// User user = blank.getUser();
prof: while(true) {
System.out.println("========== 1,【存款】 2,【取款】 3,【转账】 ========= ");
System.out.println("========== 4,【查询余额】 5,【修改密码】 6,【退出】 ========= ");
System.out.print("【请选择业务功能】:");
int num = sc.nextInt();
if (num == 1) {
System.out.println("【进入存款操作】");
System.out.print("【输入存款金额】:");
int money = sc.nextInt();
while (true) {
if (money <= 0) {
System.out.println("【请输入正确的存款金额】");
} else {
break;
}
}
blank.save(money + "");
} else if (num == 2) {
System.out.println("【进入取款操作】");
System.out.print("【输入取款金额】:");
int money = sc.nextInt();
blank.widthDraw(money+"");
System.out.println("取款成功");
} else if (num == 3) {
System.out.println("【进入转账操作】");
System.out.print("【输入转账卡号】:");
String cardNo =sc.next();
System.out.print("【输入转款金额】");
int money = sc.nextInt();
blank.trans(cardNo, money+"");
} else if (num == 4) {
blank.query();
} else if (num == 5) {
System.out.println("【进入改密操作】");
System.out.print("【输入重置密码】:");
String newpasswd =sc.next();
blank.modifyPassword(newpasswd);
break prof;
} else if (num == 6) {
System.out.println("【账号】: 退出成功");
break prof;
}
}
} else {
System.out.println("卡号或者密码输入不正确");
}
}
}
}
程序运行结果:
来源:https://blog.csdn.net/qq_45399396/article/details/119222035
标签:java,银行,ATM
![](/images/zang.png)
![](/images/jiucuo.png)
猜你喜欢
一篇文章带你从java字节码层理解i++和++i
2023-05-29 13:57:58
![](https://img.aspxhome.com/file/2023/9/63849_0s.png)
C# WinForm 判断程序是否已经在运行,且只允许运行一个实例,附源码
2021-11-06 14:10:07
swagger添加权限验证保证API(接口)安全性(两种方法)
2023-11-27 18:58:33
![](https://img.aspxhome.com/file/2023/5/60255_0s.png)
Java将json对象转换为map键值对案例详解
2023-11-28 07:38:43
![](https://img.aspxhome.com/file/2023/9/60129_0s.png)
Junit测试多线程无法得到结果的问题解决
2023-01-01 22:12:52
![](https://img.aspxhome.com/file/2023/5/71195_0s.png)
resty mail的简单发送邮件方法
2021-09-15 06:00:14
使用IDEA创建servlet JavaWeb 应用及使用Tomcat本地部署的实现
2023-09-11 06:04:09
![](https://img.aspxhome.com/file/2023/4/57814_0s.jpg)
详解Spring Boot中使用AOP统一处理Web请求日志
2021-08-24 15:50:17
RocketMQ4.5.2 修改mqnamesrv 和 mqbroker的日志路径操作
2023-11-28 14:03:18
![](https://img.aspxhome.com/file/2023/0/60370_0s.png)
Java实现简易生产者消费者模型过程解析
2023-12-03 01:33:26
![](https://img.aspxhome.com/file/2023/1/76261_0s.png)
java定时任务Timer和TimerTask使用详解
2023-07-13 00:29:33
Java httpClient介绍以及使用示例
2023-03-15 23:51:15
Java深入浅出数组的定义与使用上篇
2022-03-10 22:32:58
![](https://img.aspxhome.com/file/2023/1/67131_0s.png)
AJAX中Get请求报错404的原因以及解决办法
2021-07-03 05:41:07
![](https://img.aspxhome.com/file/2023/2/67442_0s.jpg)
springboot结合vue实现增删改查及分页查询
2023-11-24 15:53:44
![](https://img.aspxhome.com/file/2023/3/59783_0s.jpg)
Android Flutter中Offstage组件的使用教程详解
2023-08-20 01:01:44
解决idea spring boot 修改html等不重启即时生效的问题
2023-11-13 18:37:47
![](https://img.aspxhome.com/file/2023/4/59034_0s.jpg)
C#线程入门教程之单线程介绍
2022-03-15 20:37:28
![](https://img.aspxhome.com/file/2023/9/69819_0s.jpg)
SprintBoot深入浅出讲解场景启动器Starter
2023-11-24 20:58:58
![](https://img.aspxhome.com/file/2023/9/59419_0s.png)
如何解决springboot读取配置文件的中文乱码问题
2022-09-13 22:26:42
![](https://img.aspxhome.com/file/2023/7/64487_0s.png)