Java实现ATM系统

0|1Account.java

package ATMSystem;

public class Account {
    private String userName;
    private String cardId;
    private char sex;
    private String passWord;
    private double money;
    private double limit;

    public Account(String userName, String cardId, char sex, String passWord, double money, double limit) {
        this.userName = userName;
        this.cardId = cardId;
        this.sex = sex;
        this.passWord = passWord;
        this.money = money;
        this.limit = limit;
    }

    public Account() {
    }

    public String getUserName() {
        return userName;
    }

    public String getCardId() {
        return cardId;
    }

    public char getSex() {
        return sex;
    }

    public String getPassWord() {
        return passWord;
    }

    public double getMoney() {
        return money;
    }

    public double getLimit() {
        return limit;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public void setCardId(String cardId) {
        this.cardId = cardId;
    }

    public void setSex(char sex) {
        this.sex = sex;
    }

    public void setPassWord(String passWord) {
        this.passWord = passWord;
    }

    public void setMoney(double money) {
        this.money = money;
    }

    public void setLimit(double limit) {
        this.limit = limit;
    }
}

0|1ATM.java

package ATMSystem;

import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

public class ATM {
    private ArrayList<Account> accounts=new ArrayList<>();
    private ArrayList<Account>err_accounts=new ArrayList<>();
    Scanner sc=new Scanner(System.in);
    public void start(){
        while (true){
            System.out.println("~~~~~欢迎进入中国建设银行ATM系统~~~~~");
            System.out.println("1.用户登录");
            System.out.println("2.用户开户");
            System.out.println("请选择：");
            int command=sc.nextInt();
            switch (command){
                case 1:
                    Login();
                    break;
                case 2:
                    creatAccount();
                    break;
                default:
                    System.out.println("没有该操作~~");
            }
        }
    }
    /* 用户开户*/
    private void creatAccount(){
        Account acc=new Account();
       System.out.println("请输入用户姓名：");
       String name=sc.next();
       acc.setUserName(name);


       while (true) {
           System.out.println("请输入性别：");

           char sex=sc.next().charAt(0);
           if (sex == '男') {
               acc.setSex(sex);
               break;
           } else if (sex=='女') {
               acc.setSex(sex);
               break;
           }else {
               System.out.println("输入性别有误，请重新输入：");
           }
       }
//       cardid
        Random r=new Random();
       String cardid="";
        for (int i = 0; i < 8; i++) {
            cardid+=Integer.toString(r.nextInt(10));
        }
        acc.setCardId(cardid);

//        password

        while (true){
            System.out.println("请输入密码：");
            String pwd1=sc.next();
            System.out.println("请再次输入密码：");
            String pwd2=sc.next();
            if(pwd1.equals(pwd2)){
                System.out.println("密码设置成功！");
                acc.setPassWord(pwd1);
                break;
            }else{
                System.out.println("两次密码设置不一致，请重新设置密码~");
            }
        }
        acc.setLimit(5000);
        acc.setMoney(0.0);
        accounts.add(acc);
        System.out.println("恭喜您！开户成功~~");
        showAccount(acc);

    }
    private void showAccount(Account acc){
        System.out.println("用户名："+acc.getUserName());
        System.out.println("卡号:"+acc.getCardId());
        System.out.println("性别："+acc.getSex());
        System.out.println("余额："+acc.getMoney());
        System.out.println("限额："+acc.getLimit());
    }
    /*登录操作*/
    private void Login(){
//        Scanner sc=new Scanner(System.in);
        while (true){
            System.out.println("请输入卡号：");
            String carid=sc.next();
            boolean flag=false;
            for (int i = 0; i < accounts.size(); i++) {
                if(carid.equals(accounts.get(i).getCardId())){
                    flag=true;
                    boolean flag2=true;
                    if(err_accounts.size()>0){
                       for (int j=0;j<err_accounts.size();j++){
                           if(carid.equals(err_accounts.get(j).getCardId())){
                               flag2=false;
                           }
                       }
                    }
                    if(flag2){
                        //                    验证密码
                        int index=3;
                        while(index>0){
                            System.out.println("请输入密码：");
                            String pwd=sc.next();
                            if(pwd.equals(accounts.get(i).getPassWord())){
                                System.out.println("登陆成功！");
                                opMoney(accounts.get(i));
                                break;
                            }else {
                                System.out.println("密码错误，请再次输入：");
                                index--;
                                if(index==0){
                                    err_accounts.add(accounts.get(i));
                                    System.out.println("密码错误次数超过三次，您的账户被冻结，请联系工作人员~");
                                }
                            }
                        }
                    }else {
                        System.out.println("您的账户已被冻结，请联系工作人员解冻！");
                        break;
                    }
                }
            }
            if(flag==false){
                System.out.println("用户不存在，请重新输入登录！");
                break;
            }else {
                break;
            }
        }
    }
    /*存款取款*/
    private void opMoney(Account acc){
        while(true){
            System.out.println("=====请选择业务======");
            System.out.println("1.存款");
            System.out.println("2.取款");
            System.out.println("3.转账");
            System.out.println("4.注销账户");
            System.out.println("5.修改密码");
            System.out.println("6.退出");
            Scanner sc=new Scanner(System.in);
            int op=sc.nextInt();
            if (op == 1) {
                System.out.println("请输入要存的金额：");
                double in_money=sc.nextInt();
                if(in_money>acc.getLimit()){
                    System.out.println("超出限额~请重新选择业务");
                } else if (0<in_money&&in_money<=acc.getLimit()) {
                    acc.setMoney(acc.getMoney()+in_money);
                    System.out.println("余额："+acc.getMoney());
//                    break;
                }
            } else if (op==2) {
                System.out.println("请输入要取的金额：");
                double out_money=sc.nextInt();
                double final_money=acc.getMoney()-out_money;
                if (final_money>=0){
                    acc.setMoney(final_money);
                    System.out.println("余额："+acc.getMoney());
//                    break;
                }else {
                    System.out.println("余额不足~~");
                }
            } else if (op==3) {
//               转账业务
                Transfer(acc);
            } else if (op==4) {
//                注销账户
                CancelAccount(acc);

            }else if(op==5){
//              修改密码
                ChangePassword(acc);
                break;
            }else if (op==6){
//                退出
                break;
            }
            else {
                System.out.println("没有该选项！");
            }
        }
    }
    /*转账*/
    private void Transfer(Account acc){
        System.out.println("请输入对方卡号：");
        String in_cardID=sc.next();

        boolean flag=true;
//        boolean flag2=false;
        int index=-1;
        for (int i = 0; i < accounts.size(); i++) {
            if(in_cardID.equals(accounts.get(i).getCardId())){
//                flag2=true;
                index=i;
                for (int j = 0; j < err_accounts.size(); j++) {
                    if (in_cardID.equals(err_accounts.get(j).getCardId())){
                        flag=false;
                    }
                }
            }
        }
        if (index==-1){
            System.out.println("您输入的卡号不存在！");

        }else {
            if (flag==false){
                System.out.println("您输入的卡号已被冻结，无法进行转账业务！");
            }else {
                System.out.println("请输入您要转账的金额：");
                double tranfer_money=sc.nextInt();
                System.out.println("请输入您的密码：");
                String pwd=sc.next();
                if (pwd.equals(acc.getPassWord())){

                    if(tranfer_money>acc.getLimit()){
                        System.out.println("转账金额超过限额！");
                    } else if (tranfer_money>acc.getMoney()) {
                        System.out.println("余额不足！");
                    }else {
                        acc.setMoney(acc.getMoney()-tranfer_money);
                        accounts.get(index).setMoney(accounts.get(index).getMoney()+tranfer_money);
                        System.out.println("转账成功！");
                        System.out.println("账户余额："+acc.getMoney());
                    }
                }else {
                    System.out.println("密码错误！");
                }

            }
        }
    }
    /*账户注销*/
    private void CancelAccount(Account acc){
        System.out.println("请确认您是否要注销该账户：");
        System.out.println("1.是");
        System.out.println("2.否");
        showAccount(acc);
        int option=sc.nextInt();
        if (option==1){
            System.out.println("请再次输入您的密码：");
            String pwd=sc.next();
            if (pwd.equals(acc.getPassWord())){
                for (int i = 0; i < accounts.size(); i++) {
                    if (acc.getCardId().equals(accounts.get(i).getCardId())){
                        if (acc.getMoney()>0){
                            System.out.println("账户还有余额，无法注销！");
                        }else {
                            accounts.remove(i);
                            System.out.println("账户已注销！");
                            break;
                        }

                    }
                }


            }else {
                System.out.println("密码错误！请重试~");
            }
        }
    }
    /*修改密码*/
    private void ChangePassword(Account acc){
        while(true){
            System.out.println("请输入新密码：");
            String newpwd1=sc.next();
            System.out.println("请再次输入：");
            String newpwd2=sc.next();
            if (!newpwd1.equals(newpwd2)){
                System.out.println("两次输入密码不一致，请重新输入！");
            }else {
                acc.setPassWord(newpwd1);
                System.out.println("修改密码成功！");
                break;
            }
        }

    }

}

0|1TEST.java

package ATMSystem;

public class TEST {
    public static void main(String[] args) {
        ATM atm=new ATM();
        atm.start();
    }
}

__EOF__

作　　者：WeberBon
出　　处：https://www.cnblogs.com/Weber-security/p/17623788.html
关于博主：185猛男
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