Java项目实现模拟ATM机

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<size;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<size;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; }}

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