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，以及面向對象的幾大特性（繼承，封裝，多態(tài)，抽象），也有異常處理機制，基本可以滿足大多數(shù)BAM系統(tǒng)的相關實現(xiàn)，且代碼內(nèi)標注大量注釋，讀者可以很輕松地理解相關邏輯，大家可以開心參考。系統(tǒng)簡介：1、JAVA類的面相對象的應用，擁有異常處理機制，不會因為輸入錯誤而導致程序崩潰2、主要有5個類，即Account（賬戶類）SaveAccount（儲蓄賬戶類）：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、各個類之間

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

3、環(huán)境變量（請查閱相關資料，比較簡單）2、本系統(tǒng)代碼涉及到包，所以如果報名不一致就會報錯，解決方法：修改一下包名即可3、建議把各個類寫在同一個包下面，且每一個類單獨寫一個java文件，如下圖：4、在運行程序前，需要在項目下面新建一個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賬戶信息，（如下圖，其中每項代表的意思，請讀者參照代碼內(nèi)的注釋），否則在初始化的時候會因為找不到賬戶信息，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，所以設為抽象方法，相應的Account類應設為抽象類） */public abstract void withdraw(double money)

8、;SavingAccount類package com.qx;/* * 儲蓄賬戶類 */public class SavingAccount extends Account /構造函數(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，增加一個信用額度ceiling屬性 */public class CreditAccount extends Accountprivate int ceiling;/構造函數(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;ion;import java.util.Properties;/* * Bank類 * 編寫B(tài)ank類,屬性:1.當前所有的賬戶對象的集合,存放在數(shù)組中2.當前賬戶數(shù)量方法:1.用戶開戶,需要的參數(shù):id,密碼,密碼確認,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,s2兩個字符串的值是否相等.賬戶類型是一個整數(shù),為0的時候表示儲蓄賬戶,為1的時候表示信用賬戶2.用戶登錄,參數(shù):id,密碼 返回登錄賬戶的賬號3.用戶存款,參數(shù):id,存款數(shù)額,

13、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用戶會通過調用Bank對象以上的方法來操作自己的賬戶,請分析各個方法需要的參數(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，即第一個賬戶的賬號是1001/構造函數(shù)public Bank() accounts=new Account20;/以后不足時擴容。number = 0;Bu

14、fferedReader 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(",");if(str4

15、.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.toString(), str2.toString()

16、,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 catch blocke.printStack

17、Trace(); 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 void setAccounts(Account

18、 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, String personId, int t

19、ype)/創(chuàng)建一個新賬戶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);/將賬戶存入賬戶數(shù)組accounts中/判斷是否超出存儲空間

20、if(number >= accounts.length)/擴容Account newAccounts = new Accountaccounts.length*2;/copy原來的相關數(shù)據(jù)System.arraycopy(accounts, 0, newAccounts, 0, accounts.length);/將newAccounts賦給accountsaccounts = newAccounts;accountsnumber = account;elseaccountsnumber = account;System.out.println("開戶成功！賬戶信息見下&qu

21、ot;);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;/此時開戶成功elseSystem.out.

22、println("對不起！您兩次密碼輸入不匹配，開戶失敗！");return null;/此時開戶失敗/* * 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 File(path,"account.

23、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.getPersonId()+","

24、);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)bufWriter.close(); cat

25、ch (IOException e) / TODO Auto-generated catch blocke.printStackTrace();/* * 登錄驗證 */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)/驗證id號和passwordif(id = accountsi.getId() && password.equals(acco

26、untsi.getPassword()account = accountsi;break;elsebreak;return account;/* * 轉賬驗證（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)/驗證id號和passwordif(id = accountsi.getId()account = accountsi;break;elsebreak;return a

27、ccount;/* * 轉賬 */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, double money)account.withd

28、raw(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;/構造函數(shù)public ATM() bank = n

29、ew Bank();/main方法public static void main(String args)ATM atm = new ATM();/實例化ATMBank bank = atm.bank;/標號，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.println(" *2.沒有賬戶，開

30、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.nextInt();scanner = new Scan

31、ner(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*");System.out.println(&q

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

33、e 1:System.out.println("您賬戶的當前余額為："+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.print("請輸入您的取款金額：

34、");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("請輸入您要轉入賬戶的金額：");double money = scanner.nextLong();if(money <= account.balance)bank.transferAccount(account, account2, money);System.out.println("轉賬成功！");elseSystem.out.println("