BAM銀行賬戶管理系統(tǒng)java類

1、BAM銀行賬戶管理系統(tǒng)（ATM管理系統(tǒng)）本系統(tǒng)采用JAVA語言并在eclipse環(huán)境下編寫測試完成，涉及類的概念，以及面向?qū)ο蟮膸状筇匦裕ɡ^承，封裝，多態(tài)，抽象），也有異常處理機(jī)制，基本可以滿足大多數(shù)BAM系統(tǒng)的相關(guān)實(shí)現(xiàn)，且代碼內(nèi)標(biāo)注大量注釋，讀者可以很輕松地理解相關(guān)邏輯，大家可以開心參考。系統(tǒng)簡介：1、JAVA類的面相對象的應(yīng)用，擁有異常處理機(jī)制，不會(huì)因?yàn)檩斎脲e(cuò)誤而導(dǎo)致程序崩潰2、主要有5個(gè)類，即Account（賬戶類）SaveAccount（儲(chǔ)蓄賬戶類）：不能透支CreditAccount（信用賬戶類）：可以透支Bank（銀行類）ATM（ATM類） 類的具體屬性級行為見代碼 3、各個(gè)類之間

2、的相互關(guān)系，涉及繼承、封裝、多態(tài)、抽象，在多態(tài)中又涉及重載和重 寫，請讀者注意相關(guān)聯(lián)系（關(guān)注注釋） 4、可以實(shí)現(xiàn)數(shù)據(jù)保存功能，數(shù)據(jù)將保存在文件中（即當(dāng)你注冊了一個(gè)賬戶，下次再登 陸系統(tǒng)時(shí)，可以實(shí)現(xiàn)與上次最后的操作相銜接） 5、賬戶號自動(dòng)生成，比較符合現(xiàn)實(shí) 6、主要功能有：1.開戶 2.查詢賬戶余額 3.存款 4.取款 5.轉(zhuǎn)賬（一個(gè)賬戶到另一個(gè)賬戶）等 7、運(yùn)行時(shí)界面簡示1.初始界面（賬戶登錄） 2.賬戶登錄后界面注意事項(xiàng)：1、本系統(tǒng)采用的編程環(huán)境是JDK1.7，jer7。所以，運(yùn)行代碼需要保持電腦上所裝的JDK為1.7以上版本，如有報(bào)錯(cuò)，只需換個(gè)高一點(diǎn)的版本即可。注意：第一次裝JDK，要配置

3、環(huán)境變量（請查閱相關(guān)資料，比較簡單）2、本系統(tǒng)代碼涉及到包，所以如果報(bào)名不一致就會(huì)報(bào)錯(cuò)，解決方法：修改一下包名即可3、建議把各個(gè)類寫在同一個(gè)包下面，且每一個(gè)類單獨(dú)寫一個(gè)java文件，如下圖：4、在運(yùn)行程序前，需要在項(xiàng)目下面新建一個(gè)account.txt（用來保存數(shù)據(jù)）文件（如上圖），并在其中寫入至少一個(gè)賬戶信息，（如下圖，其中每項(xiàng)代表的意思，請讀者參照代碼內(nèi)的注釋），否則在初始化的時(shí)候會(huì)因?yàn)檎也坏劫~戶信息，從而產(chǎn)生異常。系統(tǒng)源碼：Account類package com.qx;/包名/* * 賬戶類:包含兩種賬戶類型->1.儲(chǔ)蓄賬戶 2.信用賬戶 */public abstract cla

4、ss Account /屬性protected long id;protected String password;protected String name;protected String personId;protected int accountType;protected double balance;/構(gòu)造方法public Account()super();public Account(long id, String password, String name, String personId,int accoutType,double balance) super();this.

5、id = id;this.password = password; = name;this.personId = personId;this.accountType = accountType;this.balance = balance;/getXxx,setXxx方法public long getId() return id;public void setId(long id) this.id = id;public String getPassword() return password;public void setPassword(String password)

6、this.password = password;public String getName() return name;public void setName(String name) = name;public String getPersonId() return personId;public void setPersonId(String personId) this.personId = personId;public int getAccountType() return accountType;public void setAccountType(int a

7、ccountType) this.accountType = accountType;public double getBalance() return balance;public void setBalance(double balance) this.balance = balance;/* * 存款 */public void deposit(double money)balance += money;/* * 取款（取款方式由賬戶類型決定，所以設(shè)為抽象方法，相應(yīng)的Account類應(yīng)設(shè)為抽象類） */public abstract void withdraw(double money)

8、;SavingAccount類package com.qx;/* * 儲(chǔ)蓄賬戶類 */public class SavingAccount extends Account /構(gòu)造函數(shù)public SavingAccount() super();public SavingAccount(long id, String password, String name, String personId,int accountType, double balance) super(id, password, name, personId, accountType, balance);/對父類的withdr

9、aw()實(shí)現(xiàn)public void withdraw(double money)if(balance < money)System.out.println("對不起，賬戶余額不足！");elsebalance -= money;CresitAccount類package com.qx;/* * 信用賬戶類，增加一個(gè)信用額度ceiling屬性 */public class CreditAccount extends Accountprivate int ceiling;/構(gòu)造函數(shù)public CreditAccount()super();public CreditAcc

10、ount(long id, String password, String name,String personId,int accountType, double balance, int ceiling)super(id, password, name, personId, accountType, balance);this.ceiling = ceiling;/getXxx,setXxx方法public int getCeiling() return ceiling;public void setCeiling(int ceiling) this.ceiling = ceiling;/

11、實(shí)現(xiàn)父類的withdraw()public void withdraw(double money)if(balance + ceiling) < money)System.out.println("對不起，已超出您的信用額度！");elsebalance -= money;Bank類package com.qx;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.i

12、o.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.Properties;/* * Bank類 * 編寫B(tài)ank類,屬性:1.當(dāng)前所有的賬戶對象的集合,存放在數(shù)組中2.當(dāng)前賬戶數(shù)量方法:1.用戶開戶,需要的參數(shù):id,密碼,密碼確認(rèn),姓名,身份證號碼,賬戶類型,返回新創(chuàng)建的Account對象的賬號, 提示:用s1.equals(s2) 可以比較s1,s2兩個(gè)字符串的值是否相等.賬戶類型是一個(gè)整數(shù),為0的時(shí)候表示儲(chǔ)蓄賬戶,為1的時(shí)候表示信用賬戶2.用戶登錄,參數(shù):id,密碼 返回登錄

13、賬戶的賬號3.用戶存款,參數(shù):id,存款數(shù)額,返回void4.用戶取款,參數(shù):id,取款數(shù)額,返回void5.查詢余額,參數(shù):id，返回該賬戶的余額 double用戶會(huì)通過調(diào)用Bank對象以上的方法來操作自己的賬戶,請分析各個(gè)方法需要的參數(shù) */public class Bank private Account accounts = new Account20;private int number;/賬戶數(shù)目private int id = 1001;/確定銀行賬號從1001開始生成，即第一個(gè)賬戶的賬號是1001/構(gòu)造函數(shù)public Bank() accounts=new Account20

14、;/以后不足時(shí)擴(kuò)容。number = 0;BufferedReader bufReader = null;Properties props=System.getProperties();String path=props.getProperty("user.dir");try bufReader=new BufferedReader(new FileReader(new File(path,"account.txt");String s = bufReader.readLine();while(s != null)String str = s.split

15、(",");if(str4.equals("0")Account savingAcc = new SavingAccount(Long.parseLong(str0),str1.toString(), str2.toString(),str3.toString(),Integer.parseInt(str4),Double.parseDouble(str5);accountsnumber = savingAcc;elseAccount creditAcc = new CreditAccount(Long.parseLong(str0),str1.toSt

16、ring(), str2.toString(),str3.toString(),Integer.parseInt(str4),Double.parseDouble(str5),5000);accountsnumber = creditAcc;number +;id+;s = bufReader.readLine(); catch (NumberFormatException e) / TODO Auto-generated catch blocke.printStackTrace(); catch (FileNotFoundException e) / TODO Auto-generated

17、catch blocke.printStackTrace(); catch (IOException e) / TODO Auto-generated catch blocke.printStackTrace();finallytry if(bufReader != null)bufReader.close(); catch (IOException e) / TODO Auto-generated catch blocke.printStackTrace();/getXxx,setXxxpublic Account getAccounts() return accounts;public v

18、oid setAccounts(Account accounts) this.accounts = accounts;public int getNumber() return number;public void setNumber(int number) this.number = number;public int getId() return id;public void setId(int id) this.id = id;/* * 開戶 */public Account openAccount(String passwd1, String passwd2, String name,

19、 String personId, int type)/創(chuàng)建一個(gè)新賬戶Account account = null;/判斷兩次密碼是否一致if(passwd1.equals(passwd2)/若一致，再判斷賬戶類型（根據(jù)type的值）if(type = 1)/可令開始余額為10,信用額度為5000account = new CreditAccount(id, passwd1, name, personId, type, 10, 5000);elseaccount = new SavingAccount(id, passwd1, name, personId, type, 10);/將賬戶存入賬

20、戶數(shù)組accounts中/判斷是否超出存儲(chǔ)空間if(number >= accounts.length)/擴(kuò)容Account newAccounts = new Accountaccounts.length*2;/copy原來的相關(guān)數(shù)據(jù)System.arraycopy(accounts, 0, newAccounts, 0, accounts.length);/將newAccounts賦給accountsaccounts = newAccounts;accountsnumber = account;elseaccountsnumber = account;System.out.print

21、ln("開戶成功！賬戶信息見下");System.out.println("您的卡號為："+id+"n"+"您的密碼為："+passwd1+"n"+"您的戶名為："+name+"n"+"您的身份證號為："+personId+"n"+"您的賬戶類型為："+type+"n");account.accountType = type;number+;id+;return account

22、;/此時(shí)開戶成功elseSystem.out.println("對不起！您兩次密碼輸入不匹配，開戶失??！");return null;/此時(shí)開戶失敗/* * 保存數(shù)據(jù) */public void saveAccountDate()BufferedWriter bufWriter=null;try Properties props=System.getProperties();String path=props.getProperty("user.dir");bufWriter=new BufferedWriter(new FileWriter(new F

23、ile(path,"account.txt");for(int i = 0;i < accounts.length;i+)/若存在賬戶if(accountsi != null)/寫入賬戶信息到account.txtbufWriter.write(accountsi.id+",");bufWriter.write(accountsi.getPassword()+",");bufWriter.write(accountsi.getName()+",");bufWriter.write(accountsi.getP

24、ersonId()+",");bufWriter.write(accountsi.getAccountType()+",");bufWriter.write(Double.toString(accountsi.getBalance();bufWriter.newLine();elsebreak;bufWriter.flush();/清空緩存中的內(nèi)容 catch (IOException e) / TODO Auto-generated catch blocke.printStackTrace();finallytry if(bufWriter!=null

25、)bufWriter.close(); catch (IOException e) / TODO Auto-generated catch blocke.printStackTrace();/* * 登錄驗(yàn)證 */public Account verifyAccount(long id, String password)Account account = null;for(int i = 0;i < accounts.length;i+)/若存在賬戶if(accountsi != null)/驗(yàn)證id號和passwordif(id = accountsi.getId() &&am

26、p; password.equals(accountsi.getPassword()account = accountsi;break;elsebreak;return account;/* * 轉(zhuǎn)賬驗(yàn)證（方法的重載） */public Account verifyAccount(long id)Account account = null;for(int i = 0;i < accounts.length;i+)/若存在賬戶if(accountsi != null)/驗(yàn)證id號和passwordif(id = accountsi.getId()account = accountsi;b

27、reak;elsebreak;return account;/* * 轉(zhuǎn)賬 */public void transferAccount(Account account1, Account account2, double money)account1.withdraw(money);account2.deposit(money);/* * 存款 */public void deposit(Account account, double money)account.deposit(money);/* * 取款 */public void withdraw(Account account, dou

28、ble money)account.withdraw(money);ATM類package com.qx;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.util.Properties;import java.util.Scanner;/* * ATM類，提供用戶界面操作 */public class ATM /屬性private Bank bank;/構(gòu)造

29、函數(shù)public ATM() bank = new Bank();/main方法public static void main(String args)ATM atm = new ATM();/實(shí)例化ATMBank bank = atm.bank;/標(biāo)號，判斷是否退出一級菜單boolean firstFlag = true;while(firstFlag)/一級菜單System.out.println("*歡迎使用XXX銀行模擬ATM系統(tǒng)，請按如下步驟操作*");System.out.println(" *1.用已有賬戶登錄");System.out.p

30、rintln(" *2.沒有賬戶，開戶");System.out.println(" *3.退出");Scanner scanner = new Scanner(System.in);System.out.print("請選擇：");try int choice1 = scanner.nextInt();switch(choice1)case 1:scanner = new Scanner(System.in);System.out.print("請輸入銀行卡號：");long id = scanner.nextI

31、nt();scanner = new Scanner(System.in);System.out.print("請輸入銀行密碼：");String password = scanner.next();Account account = bank.verifyAccount(id, password);if(account != null)/標(biāo)號，判斷是否退出二級菜單boolean secondFlag = true;while(secondFlag)/二級菜單System.out.println("*歡迎使用XXX銀行模擬ATM系統(tǒng)，請按如下步驟操作*"

32、);System.out.println(" *1.查詢賬戶余額");System.out.println(" *2.存款");System.out.println(" *3.取款");System.out.println(" *4.轉(zhuǎn)賬");System.out.println(" *5.退卡");scanner = new Scanner(System.in);System.out.print("請選擇：");try int choice2 = scanner.nextI

33、nt();switch(choice2)case 1:System.out.println("您賬戶的當(dāng)前余額為："+account.getBalance();break;case 2:scanner = new Scanner(System.in);System.out.print("請輸入您的存款金額：");double money1 = scanner.nextDouble();bank.deposit(account, money1);break;case 3:scanner = new Scanner(System.in);System.out

34、.print("請輸入您的取款金額：");double money2 = scanner.nextDouble();bank.withdraw(account, money2);break;case 4:scanner = new Scanner(System.in);System.out.print("請輸入您要轉(zhuǎn)入賬戶的卡號：");long id2 = scanner.nextLong();Account account2 = bank.verifyAccount(id2);if(account2 != null)scanner = new Scanner(System.in);System.out.print("請輸入您要轉(zhuǎn)入賬戶的金額：");double money = scanner.nextLong();if(money <= account.balance)bank.transferAccount(account, account2, money);System.out.println("轉(zhuǎn)賬成功！");elseSystem.out.println(&qu