Java实现简单银行ATM功能
作者：小黑来修仙
这篇文章主要为大家详细介绍了Java实现银行ATM简单功能，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了Java实现简单银行ATM功能的具体代码，供大家参考，具体内容如下
实现功能
1、用户需要通过输入银行卡号和密码才能进入ATM系统
2、用户可以在ATM中实现取款、存款、转账、余额查询、退出系统等功能
简单分析
1、创建User类(cardNo,identity,phone,username,password,balance(余额))
2、创建Bank类，主要实现初始化用户、用户登录、显示菜单、取款、存款、转账、余额查询、退出系统等功能。
代码实现
User.java
public class User {
private String username;
private int password;
private String cardNo;
private String identity;
private String phone;
private double blance;
public User() {
}
public User(String username, int password, String cardNo, String identity, String phone, double blance) {
this.username = username;
this.password = password;
this.cardNo = cardNo;
this.identity = identity;
this.phone = phone;
this.blance = blance;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public int getPassword() {
return password;
}
public void setPassword(int password) {
this.password = password;
}
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 getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public double getBlance() {
return blance;
}
public void setBlance(double blance) {
this.blance = blance;
}
}
Bank.java
public class Bank {
//创建用户数组
private User[] users=new User[100];
//用户个数
private int size=0;
//当前登录的用户
private User loginuser;
public Bank() {
initial();//初始化用户
}
/**
* 初始化用户
*/
public void initial(){
User user1=new User("钟爱",12346,"6226789234023434","130324192309123074","13133565435",2312313);
User user2=new User("冷冬",12354,"6226789234023567","1305472309123074","13446745675",2333);
User user3=new User("小龙",9893,"6226789234023564","13032414575467457","13145745435",255553);
User user4=new User("赵丽颖",6342,"6226789234029324","130324192647456774","13145675435",288883);
User user5=new User("徐三哥",8445,"6226789234025487","1303241923456744","1457785435",28989);
users[0]=user1;
users[1]=user2;
users[2]=user3;
users[3]=user4;
users[4]=user5;
size=5;
}
/**
* 用户登录
*/
public User login(String cardNo,int password){
for (int i = 0; i <size ; i++) {
if((users[i].getCardNo().equals(cardNo))&&(users[i].getPassword()==password)){
loginuser=users[i];
return users[i];
}
}
return null;
}
/**
* 显示菜单
*/
public void showMenus(){
Scanner input =new Scanner(System.in);
do { System.out.println("**********************************欢迎进入ATM系统*****************************************");
System.out.println("*********************1 存款 2 取钱 3 转账 4 查询余额 5 修改密码 0 退出***********************");
int choice=input.nextInt();
switch (choice){
case 1:
//取款
save();
break;
case 2:
//存钱
withdraw();
break;
case 3:
//转账
trans();
break;
case 4:
//查询余额
query();
break;
case 5:
//修改密码
revise();
break;
case 0:
//退出ATM系统
System.out.println("欢迎下次使用本系统");
return;
}
} while (true);
}
/**
* 存款操作
*/
public void save(){
System.out.println("请输入您的存款金额：");
Scanner input=new Scanner(System.in);
int money=input.nextInt();
if(loginuser!=null){
if(money>0){
loginuser.setBlance(loginuser.getBlance()+money);
System.out.println("存款成功");
System.out.println("您的当前余额为"+loginuser.getBlance());
}else{
System.out.println("输入错误！");
}
}else{
System.out.println("您还未进行账户登录");
}
}
/**
* 取款操作
*/
public void withdraw(){
Scanner input=new Scanner(System.in);
System.out.println("请输入你要取出的金额为：");
int money=input.nextInt();
if(loginuser!=null){
if(money>0&&money<=loginuser.getBlance()){
loginuser.setBlance(loginuser.getBlance()-money);
System.out.println("取款成功");
System.out.println("您的当前余额为:"+loginuser.getBlance());
}else{
System.out.println("输入错误");
}
}else{
System.out.println("您还未进行账户登录");
}
}
/**
* 转账操作
*/
public void trans(){
Scanner input=new Scanner(System.in);
System.out.println("请输入要转入账户的卡号:");
String cardNo=input.next();
User nuser=null;//对方账户
boolean IsExit=false;//判断对方账户是否存在
for (int i = 0; i <size; i++) {
if(users[i].getCardNo().equals(cardNo)){
IsExit=true;//检索到对方账户
nuser=users[i];
}
}
if(loginuser==nuser){
System.out.println("不可以自己给自己账户进行转账");
return;
}
if(loginuser!=null){
System.out.println("请输入要转账的金额:");
int money=input.nextInt();
if(money>0&&money<=loginuser.getBlance()){
loginuser.setBlance(loginuser.getBlance()-money);
nuser.setBlance(nuser.getBlance()+money);
System.out.println("转账成功");
System.out.println("您当前余额为"+loginuser.getBlance());
System.out.println(nuser.getBlance());
}else{
System.out.println("输入错误");
}
}else{
System.out.println("请登录账户");
}
}
/**
* 查询余额
*/
public void query(){
System.out.println("您的余额为："+loginuser.getBlance());
}
/**
* 修改密码
*/
public void revise(){
Scanner input=new Scanner(System.in);
System.out.println("请输入您的新密码");
int newpassword=input.nextInt();
for (int i = 0; i < size; i++) {
if(users[i]==loginuser){
users[i].setPassword(newpassword); //进行修改
}
}
System.out.println("密码修改成功");
}
}
BankSystem.java
public class BankSystem {
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
Bank bank=new Bank();
System.out.println("请输入您的卡号：");
String cardNo=input.next();
System.out.println("请输入您的密码:");
int password=input.nextInt();
User user = bank.login(cardNo, password);//用户登录
if(user!=null){
System.out.println(user.getUsername()+"登陆成功");
bank.showMenus();
}else{
System.out.println("登陆失败");
}
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。