JAVA简单ATM的实现

本文主要是介绍JAVA简单ATM的实现，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

实验要求

登陆界面

1.登陆   2.注册    3.退出

操作界面

1.存款   2.取款 3.转账  4.查余额  5.退卡

效果图

源代码

ATM类

 

package com.company;
import java.util.Scanner;
public class ATM {private Bank bank;private BankCard bankcard;private double money;private int id;private  int passwd;public ATM(){bank=new Bank();}public void login(int id,int passwd){//登陆if(bank.contains(id,passwd)){bankcard=bank.getcard(id,passwd);start2();}else{System.out.println("账号密码错误");}}public boolean register(int id,int passwd){//注册if(bank.contains(id,passwd)){System.out.println("账号已经被注册");return false;}BankCard card=new BankCard(id,passwd);bank.add(card);System.out.println("注册成功");return true;}public void start() {//菜单页面while (true){System.out.println("1. 登陆 2.注册 3.退出");Scanner scanner = new Scanner(System.in);int chioce = scanner.nextInt();if (chioce == 3) {break;}System.out.println("请输入账号：");int id = scanner.nextInt();System.out.println("请输入密码：");int passwd = scanner.nextInt();switch (chioce) {case 1:login(id, passwd);break;case 2:register(id, passwd);break;}}}public void start2(){//登陆之后菜单while (true){int id1=0;System.out.println("1. 存款 2.取款 3.转账 4.查余额 5.退卡");Scanner scanner = new Scanner(System.in);int chioce = scanner.nextInt();if (chioce == 5) {//退出return;}switch (chioce) {case 1://存款System.out.println("请输入存款金额:");money = scanner.nextDouble();bank.deposit(bankcard,money);System.out.println("存款成功！");break;case 2://取款System.out.println("请输入取款金额:");money = scanner.nextDouble();if(bank.withdrawMoney (bankcard,money)) {System.out.println("取款成功！");}break;case 3://转账System.out.println("请输入转账用户id:");id1=scanner.nextInt();if(!bank.contains2(id1)){//检查账户是否注册System.out.println("账户未注册");}else{System.out.println("请输入转账金额:");money = scanner.nextDouble();if(bank.transferAccounts(bankcard,bank.getCard1(id1),money)){System.out.println("转账成功");}else{System.out.println("余额不足，转账失败");}}case 4://查询余额System.out.println("余额为："+bank.queryAccounts(bankcard));}}}}

Bank类

package com.company;import java.util.Arrays;public class Bank {private BankCard[] cards;//存储银行卡private int size;//计卡的数量private static final int INITSIZE=10;public Bank(){cards=new BankCard[INITSIZE];}public void add(BankCard card){//添加一张银行卡if(cards.length==size){cards= Arrays.copyOf(cards,cards.length+(cards.length>>1));}cards[size]=card;size++;}public boolean contains(int id,int passwd){//查询是否存在银行卡id和passwdfor(int i=0;i<size;i++) {if (cards[i].getId()== id && cards[i].getPasswd() == passwd) {return true;}}return false;}public boolean contains2(int id){//查询是否存在银行卡id和passwdfor(int i=0;i<size;i++) {if (cards[i].getId()== id) {return true;}}return false;}public BankCard getcard(int id,int passwd) {//输入卡号密码返回银行卡for(int i=0;i<size;i++){if(cards[i].getId()== id && cards[i].getPasswd() == passwd){return cards[i];}}return null;}public BankCard getCard1(int id) {//输入卡号返回银行卡for(int i=0;i<size;i++){if(cards[i].getId()== id ){return cards[i];}}return null;}public  boolean deposit(BankCard card, double money) {//存款，利用boolean类型返回两种情况，方便给用户提示；return card.setMoney(money);}public boolean withdrawMoney(BankCard card, double money) {//取款return card.getMoney(money);}public boolean transferAccounts(BankCard card,BankCard card1, double money) {//转账if (card.getMoney(money)) {card1.setMoney(money);return true;} else {return false;}}public double queryAccounts(BankCard card) {//查询余额；return card.getBalance();}
}

Bankcard类

package com.company;public class BankCard {private double money;private  int id;private  int passwd;public BankCard(int id, int passwd) {this.id=id;this.passwd=passwd;}public boolean getMoney(double money) {//在账户上取钱if(this.money>=money){this.money-=money;return true;}else{return false;}}public boolean setMoney(double money) {//在账户哦上存款this.money += money;return true;}public int getId() {return id;}public void setId(int id) {this.id = id;}public int getPasswd() {return passwd;}public void setPasswd(int passwd) {this.passwd = passwd;}public double getBalance() {//返回this.money值return this.money;}
}

 

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