一、问题描述

烛九幽穿越到了九州修仙界，加入了人族第一大势力：仙盟，他发现宗门的任务系统有点眼熟，就是披着仙侠皮的ATM系统。下面我们就来实现仙侠版的ATM系统。

二、基本流程

定义property类
注册账户
账户登录

三、具体步骤

1.定义属性类

/*** 定义属性类*/
class property{private String name;//姓名private String ID;//身份号private String password;//密码private int age;//年龄private String race;//种族private String quality;//修为private int contribution;//贡献点public property(String name, String ID, String password, int age, String race, String quality, int contribution) {this.name = name;this.ID = ID;this.password = password;this.age = age;this.race = race;this.quality = quality;this.contribution = contribution;}public property() {}public String getQuality() {return quality;}public void setQuality(String quality) {this.quality = quality;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getID() {return ID;}public void setID(String ID) {this.ID = ID;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getRace() {return race;}public void setRace(String race) {this.race = race;}public int getContribution() {return contribution;}public void setContribution(int contribution) {this.contribution = contribution;}
}

2.菜单栏

private static void menu() {System.out.println("-----------------欢迎道友来到仙盟---------------------");System.out.println("请您选择操作：");System.out.println("1.注册账户");System.out.println("2.登录系统");System.out.println("3.退出");}

3.账户注册

(1)根据ID获取账户

    /*** 通过ID获得账户信息** @param proArrayList 集合* @param ID* @return 找到的账户信息（如果未找到，返回null）*/private static property getproByID(ArrayList<property> proArrayList, String ID) {for (int i = 0; i < proArrayList.size(); i++) {if(ID.equals(proArrayList.get(i).getID()))return proArrayList.get(i);}return null;}

(2)获取注册ID

   /*** 获取不重复的ID* @return ID*/private static String getPropertyID(ArrayList<property> proArrayList) {Random ran = new Random();while(true){StringBuilder sb=new StringBuilder();for (int i = 0; i < 9; i++) {sb.append(ran.nextInt(10));}String ID = sb.toString();property pro = getproByID(proArrayList,ID);if(pro==null)return ID;}}

(3)注册账户

   /*** 进入注册/登录界面* @param sca 扫描器* @param proArrayList 集合*/private static void register(Scanner sca, ArrayList<property> proArrayList) {System.out.println("-----------------注册---------------------");property pro = new property();System.out.println("请您输入您的姓名：");String name = sca.next();pro.setName(name);System.out.println("请输入您的年龄：");int age = sca.nextInt();pro.setAge(age);System.out.println("请您输入您的种族：");String race = sca.next();pro.setRace(race);System.out.println("请您输入您的修为：");String quality = sca.next();pro.setQuality(quality);String ID;ID = getPropertyID(proArrayList);pro.setID(ID);System.out.println("请您输入登录密码：");String password = sca.next();pro.setPassword(password);System.out.println("尊敬的【"+name+"】道友，您的登录ID是："+ID);proArrayList.add(pro);//添加到集合中}

4.账户登录

    /*** 登录系统* @param sca 扫描器* @param proArrayList 集合*/private static void longin(Scanner sca, ArrayList<property> proArrayList) {while (true){System.out.println("请您输入您的登录ID：");String ID = sca.next();property pro = getproByID(proArrayList,ID);if(pro == null){System.out.println("系统中未查询到该用户，请您检查ID输入是否正确，请重新输入！");}else{while (true){System.out.println("请您输入登录密码：");String password = sca.next();if(pro.getPassword().equals(password)){System.out.println("密码输入正确！");System.out.println("登录成功！");users_function(sca,pro,proArrayList);break;//登录成功，退出内循环}else {System.out.println("密码输入错误，请您重新输入！");}}}break;}}

5.登录界面

    /*** 用户操作具体实现* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合*/private static void users_function(Scanner sca, property pro, ArrayList<property> proArrayList) {boolean flag = false;boolean flag2 = false;while (true) {function();System.out.println("请您输入选择的操作命令：");int input = sca.nextInt();switch (input) {case 1://查询check_property(pro);break;case 2://交易deal_property(sca,pro,proArrayList);break;case 3://退出flag = quit_porperty();break;case 4://注销flag2 = logout_porperty(sca,pro,proArrayList);break;}if (flag||flag2)break;}}

6.操作界面

    /*** 用户操作界面*/private static void function() {System.out.println("------------欢迎来到用户操作界面------------");System.out.println("请您输入选择：");System.out.println("1.查询");System.out.println("2.交易");System.out.println("3.退出");System.out.println("4.注销");}

(1)查询

    /*** 展示属性* @param pro 登录的该账户*/private static void check_property(property pro) {System.out.println("----------------------属性------------------------");System.out.print("【");System.out.println("姓名："+pro.getName());System.out.println("ID："+pro.getID());System.out.println("年龄："+pro.getAge());System.out.println("修为："+pro.getQuality());System.out.println("种族："+pro.getRace());System.out.print("贡献点："+pro.getContribution());System.out.println("】");}

(2)交易界面

    /*** 交易系统* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合*/private static void deal_property(Scanner sca, property pro, ArrayList<property> proArrayList) {boolean flag = false;while(true){System.out.println("-------------------交易系统---------------------");System.out.println("1.存款");System.out.println("2.取款");System.out.println("3.转账");System.out.println("4.退出");System.out.println("请您输入您的选择：");int input = sca.nextInt();switch (input){case 1://存款add_contribution(sca,pro);break;case 2://取款sub_contribution(sca,pro);break;case 3://转账transfer_contribution(sca,pro,proArrayList);break;case 4://退出flag = quit_deal();break;}if(flag)break;}}

(1)存款

    /*** 存款* @param sca 扫描器* @param pro 登录的账户*/private static void add_contribution(Scanner sca, property pro) {System.out.println("-----------------存款----------------------");System.out.println("请您输入待存的贡献点数：");int contr = sca.nextInt();pro.setContribution(pro.getContribution()+contr);System.out.println("您已成功存取 "+contr+" 点贡献点！");System.out.println("您当前共有贡献点:"+pro.getContribution());}

(2)取款

    /*** 取出贡献点* @param sca 扫描器* @param pro 登录的账户*/private static void sub_contribution(Scanner sca, property pro) {System.out.println("---------------------取款----------------------");while (true){System.out.println("请您输入待取点数：");int contr = sca.nextInt();if(contr>=0){if(contr<=pro.getContribution()) {pro.setContribution(pro.getContribution()-contr);System.out.println("您已成功取出"+contr+"点！");System.out.println("您当前共有贡献点:"+pro.getContribution());break;}System.out.println("您的余额不足！");System.out.println("当前余额为："+pro.getContribution());System.out.println("请您重新输入！");}else{System.out.println("您输入的点数非法，请您重新输入！");}}}

(3)转账

(a)得到屏蔽姓名

    /*** 得到屏蔽姓名* @param other_pro 对方账户* @return 屏蔽姓名*/private static String getotherName(property other_pro) {String name = other_pro.getName();int flag = name.length();String other_name ="";if(flag==2)return other_name = name.replace(name.substring(1),"*");if(flag==3)return other_name=name.replace(name.substring(1),"**");else return other_name=name.replace(name.substring(2),"**");}

(b)转账

    /*** 转账* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合*/private static void transfer_contribution(Scanner sca, property pro, ArrayList<property> proArrayList) {System.out.println("--------------------转账-----------------------");if(proArrayList.size()<2){System.out.println("当前系统中只有一个账户，无法转账！");return;}while (true){System.out.println("请您输入对方账户的ID：");String other_ID = sca.next();if(other_ID.equals(pro.getID()))System.out.println("您输入的是自己的ID，无法转账，请您重新输入！");property other_pro = new property();other_pro = getproByID(proArrayList,other_ID);if(other_pro==null){System.out.println("系统中查无此人，请您重新输入！");}else{while (true){System.out.println("请您输入要转账的贡献点数：");int contr = sca.nextInt();if(contr>=0){if(contr<=pro.getContribution()){while(true){String other_name = getotherName(other_pro);System.out.println("请您输入【"+other_name+"】的完整姓名以验证身份！");String input_name = sca.next();if(other_pro.getName().equals(input_name)){other_pro.setContribution(other_pro.getContribution()+contr);pro.setContribution(pro.getContribution()-contr);System.out.println("您已成功转账 "+contr+" 点贡献点！");System.out.println("您当前还有 "+pro.getContribution()+" 点贡献点！");break;}else{System.out.println("您输入的姓名有误，请您重新输入！");}}break;}else{System.out.println("您当前贡献点不足！");System.out.println("当前您的贡献点为:"+pro.getContribution());System.out.println("请您重新输入！");}}else {System.out.println("您输入的点数非法，请您重新输入！");}}}break;}}

(4)退出交易

    /*** 退出交易* @return true*/private static boolean quit_deal() {System.out.println("------------------退出交易------------------");System.out.println("您已退出交易系统！");return true;}

(3)退出登录

    /*** 退出登录*/private static boolean quit_porperty() {System.out.println("-------------------退出登录--------------------");System.out.println("您已退出登录！");return true;}

(4)注销账户

    /*** 注销账户* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合* @return true*/private static boolean logout_porperty(Scanner sca, property pro, ArrayList<property> proArrayList) {System.out.println("----------------注销账户-------------------");System.out.println("请您确认是否要注销账户？ 是/否");System.out.println("请你输入选择：");String input = sca.next();if(input.equals("是")){proArrayList.remove(pro);System.out.println("注销账户成功！");return true;}elsereturn false;}

四、代码实现

import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;public class tianwang {public static void main(String[] args) {Scanner sca = new Scanner(System.in);ArrayList<property> proArrayList = new ArrayList<>();while (true){menu();while(true){System.out.println("请您输入选择命令：");int input = sca.nextInt();switch(input){case 1:register(sca,proArrayList);break;case 2:longin(sca,proArrayList);break;case 3:System.out.println("仙盟感谢道友的光临！");return;default:System.out.println("输入错误，请您重新输入！");}break;}}}/*** 登录系统* @param sca 扫描器* @param proArrayList 集合*/private static void longin(Scanner sca, ArrayList<property> proArrayList) {while (true){System.out.println("请您输入您的登录ID：");String ID = sca.next();property pro = getproByID(proArrayList,ID);if(pro == null){System.out.println("系统中未查询到该用户，请您检查ID输入是否正确，请重新输入！");}else{while (true){System.out.println("请您输入登录密码：");String password = sca.next();if(pro.getPassword().equals(password)){System.out.println("密码输入正确！");System.out.println("登录成功！");users_function(sca,pro,proArrayList);break;//登录成功，退出内循环}else {System.out.println("密码输入错误，请您重新输入！");}}}break;}}/*** 用户操作具体实现* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合*/private static void users_function(Scanner sca, property pro, ArrayList<property> proArrayList) {boolean flag = false;boolean flag2 = false;while (true) {function();System.out.println("请您输入选择的操作命令：");int input = sca.nextInt();switch (input) {case 1://查询check_property(pro);break;case 2://交易deal_property(sca,pro,proArrayList);break;case 3://退出flag = quit_porperty();break;case 4://注销flag2 = logout_porperty(sca,pro,proArrayList);break;}if (flag||flag2)break;}}/*** 注销账户* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合* @return true*/private static boolean logout_porperty(Scanner sca, property pro, ArrayList<property> proArrayList) {System.out.println("----------------注销账户-------------------");System.out.println("请您确认是否要注销账户？ 是/否");System.out.println("请你输入选择：");String input = sca.next();if(input.equals("是")){proArrayList.remove(pro);System.out.println("注销账户成功！");return true;}elsereturn false;}/*** 交易系统* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合*/private static void deal_property(Scanner sca, property pro, ArrayList<property> proArrayList) {boolean flag = false;while(true){System.out.println("-------------------交易系统---------------------");System.out.println("1.存款");System.out.println("2.取款");System.out.println("3.转账");System.out.println("4.退出");System.out.println("请您输入您的选择：");int input = sca.nextInt();switch (input){case 1://存款add_contribution(sca,pro);break;case 2://取款sub_contribution(sca,pro);break;case 3://转账transfer_contribution(sca,pro,proArrayList);break;case 4://退出flag = quit_deal();break;}if(flag)break;}}/*** 退出交易* @return true*/private static boolean quit_deal() {System.out.println("------------------退出交易------------------");System.out.println("您已退出交易系统！");return true;}/*** 转账* @param sca 扫描器* @param pro 登录的账户* @param proArrayList 集合*/private static void transfer_contribution(Scanner sca, property pro, ArrayList<property> proArrayList) {System.out.println("--------------------转账-----------------------");if(proArrayList.size()<2){System.out.println("当前系统中只有一个账户，无法转账！");return;}while (true){System.out.println("请您输入对方账户的ID：");String other_ID = sca.next();if(other_ID.equals(pro.getID()))System.out.println("您输入的是自己的ID，无法转账，请您重新输入！");property other_pro = new property();other_pro = getproByID(proArrayList,other_ID);if(other_pro==null){System.out.println("系统中查无此人，请您重新输入！");}else{while (true){System.out.println("请您输入要转账的贡献点数：");int contr = sca.nextInt();if(contr>=0){if(contr<=pro.getContribution()){while(true){String other_name = getotherName(other_pro);System.out.println("请您输入【"+other_name+"】的完整姓名以验证身份！");String input_name = sca.next();if(other_pro.getName().equals(input_name)){other_pro.setContribution(other_pro.getContribution()+contr);pro.setContribution(pro.getContribution()-contr);System.out.println("您已成功转账 "+contr+" 点贡献点！");System.out.println("您当前还有 "+pro.getContribution()+" 点贡献点！");break;}else{System.out.println("您输入的姓名有误，请您重新输入！");}}break;}else{System.out.println("您当前贡献点不足！");System.out.println("当前您的贡献点为:"+pro.getContribution());System.out.println("请您重新输入！");}}else {System.out.println("您输入的点数非法，请您重新输入！");}}}break;}}/*** 得到屏蔽姓名* @param other_pro 对方账户* @return 屏蔽姓名*/private static String getotherName(property other_pro) {String name = other_pro.getName();int flag = name.length();String other_name ="";if(flag==2)return other_name = name.replace(name.substring(1),"*");if(flag==3)return other_name=name.replace(name.substring(1),"**");else return other_name=name.replace(name.substring(2),"**");}/*** 取出贡献点* @param sca 扫描器* @param pro 登录的账户*/private static void sub_contribution(Scanner sca, property pro) {System.out.println("---------------------取款----------------------");while (true){System.out.println("请您输入待取点数：");int contr = sca.nextInt();if(contr>=0){if(contr<=pro.getContribution()) {pro.setContribution(pro.getContribution()-contr);System.out.println("您已成功取出"+contr+"点！");System.out.println("您当前共有贡献点:"+pro.getContribution());break;}System.out.println("您的余额不足！");System.out.println("当前余额为："+pro.getContribution());System.out.println("请您重新输入！");}else{System.out.println("您输入的点数非法，请您重新输入！");}}}/*** 存款* @param sca 扫描器* @param pro 登录的账户*/private static void add_contribution(Scanner sca, property pro) {System.out.println("-----------------存款----------------------");System.out.println("请您输入待存的贡献点数：");int contr = sca.nextInt();pro.setContribution(pro.getContribution()+contr);System.out.println("您已成功存取 "+contr+" 点贡献点！");System.out.println("您当前共有贡献点:"+pro.getContribution());}/*** 退出登录*/private static boolean quit_porperty() {System.out.println("-------------------退出登录--------------------");System.out.println("您已退出登录！");return true;}/*** 展示属性* @param pro 登录的该账户*/private static void check_property(property pro) {System.out.println("----------------------属性------------------------");System.out.print("【");System.out.println("姓名："+pro.getName());System.out.println("ID："+pro.getID());System.out.println("年龄："+pro.getAge());System.out.println("修为："+pro.getQuality());System.out.println("种族："+pro.getRace());System.out.print("贡献点："+pro.getContribution());System.out.println("】");}/*** 用户操作界面*/private static void function() {System.out.println("------------欢迎来到用户操作界面------------");System.out.println("请您输入选择：");System.out.println("1.查询");System.out.println("2.交易");System.out.println("3.退出");System.out.println("4.注销");}/*** 进入注册/登录界面* @param sca 扫描器* @param proArrayList 集合*/private static void register(Scanner sca, ArrayList<property> proArrayList) {System.out.println("-----------------注册---------------------");property pro = new property();System.out.println("请您输入您的姓名：");String name = sca.next();pro.setName(name);System.out.println("请输入您的年龄：");int age = sca.nextInt();pro.setAge(age);System.out.println("请您输入您的种族：");String race = sca.next();pro.setRace(race);System.out.println("请您输入您的修为：");String quality = sca.next();pro.setQuality(quality);String ID;ID = getPropertyID(proArrayList);pro.setID(ID);System.out.println("请您输入登录密码：");String password = sca.next();pro.setPassword(password);System.out.println("尊敬的【"+name+"】道友，您的登录ID是："+ID);proArrayList.add(pro);//添加到集合中}/*** 获取不重复的ID* @return ID*/private static String getPropertyID(ArrayList<property> proArrayList) {Random ran = new Random();while(true){StringBuilder sb=new StringBuilder();for (int i = 0; i < 9; i++) {sb.append(ran.nextInt(10));}String ID = sb.toString();property pro = getproByID(proArrayList,ID);if(pro==null)return ID;}}/*** 通过ID获得账户信息** @param proArrayList 集合* @param ID* @return 找到的账户信息（如果未找到，返回null）*/private static property getproByID(ArrayList<property> proArrayList, String ID) {for (int i = 0; i < proArrayList.size(); i++) {if(ID.equals(proArrayList.get(i).getID()))return proArrayList.get(i);}return null;}private static void menu() {System.out.println("-----------------欢迎道友来到仙盟---------------------");System.out.println("请您选择操作：");System.out.println("1.注册账户");System.out.println("2.登录系统");System.out.println("3.退出");}
}/*** 定义属性类*/
class property{private String name;//姓名private String ID;//身份号private String password;//密码private int age;//年龄private String race;//种族private String quality;//修为private int contribution;//贡献点public property(String name, String ID, String password, int age, String race, String quality, int contribution) {this.name = name;this.ID = ID;this.password = password;this.age = age;this.race = race;this.quality = quality;this.contribution = contribution;}public property() {}public String getQuality() {return quality;}public void setQuality(String quality) {this.quality = quality;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getID() {return ID;}public void setID(String ID) {this.ID = ID;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getRace() {return race;}public void setRace(String race) {this.race = race;}public int getContribution() {return contribution;}public void setContribution(int contribution) {this.contribution = contribution;}
}

五、效果展示

1.账户注册

2.账户登录

(1)查询属性

(2)交易界面

(1)存款

(2)取款

(3)转账

(4)退出交易系统

(3)退出登录

(4)注销账户

此时我们再登录韩立的账户，发现已经不能登录了！

(5)登录【萧炎】的账户

刚才转账的1000贡献点已到账!