本文实例为大家分享了Java实现模拟ATM机的具体代码，供大家参考，具体内容如下
项目名称
模拟ATM机
项目描述
简单实现ATM机功能
代码实现
测试类
public class Test {
//模拟多功能ATM机
public static void main(String[] args) {
ATM atm = new ATM();
atm.opearte();
}
}
主类：实现主方法
public class ATM {
private Bank bank;
public ATM(){
bank = new Bank();
}
private void success(BankCard bankCard) {
while (true) {
System.out.println("请选择：1、查询余额，2、取款，3、存款，4、转账，5、退卡");
Scanner scanner = new Scanner(System.in);
int choice = scanner.nextInt();
if (choice == 5) {
return;
}
switch (choice) {
case 1:
int money = bank.printf(bankCard);
System.out.println("余额：" + money);
break;
case 2:
System.out.println("请输入取款金额：");
money = scanner.nextInt();
bankCard.withdraw(money);
break;
case 3:
System.out.println("请输入存款金额：");
money = scanner.nextInt();
bankCard.deposit(money);
break;
case 4:
System.out.println("请输入对方账户id：");
int id = scanner.nextInt();
BankCard card = bank.transfer(id);
if(card != null){
System.out.println("请输入转账金额：");
money = scanner.nextInt();
if(money <= bankCard.getMoney()){
bankCard.withdraw(money);
card.deposit(money);
}else {
System.out.println("转账失败");
}
}else {
System.out.println("未找到该账户");
}
break;
default:
}
}
}
private void login(){ //登录
System.out.println("请输入账号，密码");
Scanner scanner = new Scanner(System.in);
int id = scanner.nextInt();
int password = scanner.nextInt();
BankCard bankCard = bank.search(id,password);
if(bankCard != null){
System.out.println("登录成功");
success(bankCard);
}else {
System.out.println("登录失败，请注册");
}
}
private void register(){ //注册
System.out.println("请输入账号，密码");
Scanner scanner = new Scanner(System.in);
int id = scanner.nextInt();
int password = scanner.nextInt();
BankCard bankCard = bank.search(id,password);
if(bankCard != null){
System.out.println("该账号已存在，请直接登录");
}else {
bank.addcard(id,password);
System.out.println("注册成功");
}
}
public void opearte() {
while (true) {
System.out.println("请选择：1、登录，2、注册，3、退出");
Scanner scanner = new Scanner(System.in);
int choice = scanner.nextInt();
if (choice == 3) {
return;
}
switch (choice) {
case 1:
login();
break;
case 2:
register();
break;
default:
}
}
}
}
银行类：一个银行对应多个ATM机
public class Bank {
private BankCard[] bankCards;
private final int INITSIZE = 10;
private int size;
public Bank(){
bankCards = new BankCard[INITSIZE];
size = 0;
}
public BankCard search(int id,int password){ //搜索
BankCard[] bankCard = bankCards;
for(int i=0;i
if(bankCards[i].getId() == id && bankCards[i].getPassword() == password){
return bankCard[i];
}
}
return null;
}
public void addcard(int id,int password){ //注册
BankCard bankCard = new BankCard(id, password);
if (size == bankCards.length){
bankCards = Arrays.copyOf(bankCards,bankCards.length * 2);
}
bankCards[size++] = bankCard;
}
public int printf(BankCard bankCard){ //显示余额
return bankCard.getMoney();
}
public BankCard transfer(int id){
for(int i=0;i
if(bankCards[i].getId() == id){
return bankCards[i];
}
}
return null;
}
}
银行卡类：不同账户的操作
public class BankCard {
private int id;
private int password;
private int money;
private int size = 0;
public BankCard(int id,int password){
this.id = id;
this.password = password;
money = 0;
}
public int getId(){
return id;
}
public int getPassword(){
return password;
}
public int getMoney(){
return money;
}
public void withdraw(int money){ //取款
if(this.money >= money){
this.money -= money;
}else {
System.out.println("取款失败");
}
}
public void deposit(int money){ //存款
this.money += money;
}
}
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云海天教程。
原文链接：https://blog.csdn.net/Sampson_S/article/details/105166915
