4.14总结

今日学习ATM项目

package com.fzyun;

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

public class ATMSystem {
    public static void main(String[] args) {
        //1.定义一个账户类
        //2.定义一个集合容器，负责以后存储全部的账户对象，进行相关的业务操作
        ArrayList<Account> accounts = new ArrayList<>();
        Scanner sc = new Scanner(System.in);//放在外面节省内存。
        //3.展示系统的首页
        while (true) {
            System.out.println("==========ATM系统==========");
            System.out.println("1：账户登录");
            System.out.println("2：用户注册");

            System.out.println("请您选择数字进行操作");
            int command = sc.nextInt();

            switch (command){
                case 1:
                    //用户登录
                    break;
                case 2:
                    //用户注册——创建方法，Alt+回车+回车
                    register(accounts,sc);
                    break;
                default:
                    System.out.println("您输入的操作命令不存在");
            }
        }
    }

    /**
     * 方法目的：用户注册开户
     * private只能在本类中使用
     * @param accounts 接受账户的集合
     */
    private static void register(ArrayList<Account> accounts,Scanner sc) {
        System.out.println("=======系统注册界面========");
        //1.创建一个账户对象，用于后期封装账户信息
        Account account = new Account();
        //2.录入账户信息，注入到账户对象中去
        System.out.println("请您输入账户名称：");
        String userName = sc.next();
        account.setUserName(userName);//将信息收录进账户中去

        while (true) {
            System.out.println("请您输入账户名称：");
            String passWord = sc.next();
            System.out.println("请您再次确认密码：");
            String okPassWord = sc.next();
            if (okPassWord.equals(passWord)){
                //认证通过，可以注册
                account.setPassWord(okPassWord);
                break;//密码录入成功
            }else {
                System.out.println("您输入的两次密码不一致，请重新确认");
            }
        }
        System.out.println("请您输入账户当次限额：");
        double quotaMoney = sc.nextDouble();
        account.setQuotaMoney(quotaMoney);

        //为账户生成随机八位且与其他账号不重复的号码
        String carID = getRandomCardID(account);

        //3.    将账户对象添加到账户集合中
    }

    /**
     * 为我们账户生成八位与其他账户卡号不同的号码
     * @return
     */
    private static String getRandomCardID(ArrayList<Account> accounts) {
        //1.先生成8位数字
        String cardID = "";
        Random r = new Random();
        for (int i = 0; i < 8; i++) {//随机八个数字，将其连接起来
            cardID += r.nextInt(10);//bound 10,生成数字范围为0-9 10位数
        }

        //2.判断8位卡号是否重复

        return null;//return cardID;错误，不能直接返回，有可能与其他人的ID重复
    }

    /**
     * 根据卡号查询出一个账户对象    
     * @param cardID
     * @param accound
     * @return
     */
    private static Account getAccountByCardID(String cardID , ArrayList<Account> accound){

    }
}

package com.fzyun;

/**
 账户类
 */

public class Account {
    private String cardID;
    private String userName;
    private String passWord;
    private Double money;//账户余额
    private Double quotaMoney;//每次取现额度

    //无参数构造器是默认提供的

    public String getCardID() {
        return cardID;
    }

    public void setCardID(String cardID) {
        this.cardID = cardID;
    }

    public String getUserName() {
        return userName;
    }

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

    public String getPassWord() {
        return passWord;
    }

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

    public Double getMoney() {
        return money;
    }

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

    public Double getQuotaMoney() {
        return quotaMoney;
    }

    public void setQuotaMoney(Double quotaMoney) {
        this.quotaMoney = quotaMoney;
    }
}