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1、wordBAM银行账户管理系统ATM管理系统本系统采用JAVA语言并在eclipse环境下编写测试完成，涉与类的概念，以与面向对象的几大特性继承，封装，多态，抽象，也有异常处理机制，根本可以满足大多数BAM系统的相关实现，且代码内标注大量注释，读者可以很轻松地理解相关逻辑，大家可以开心参考。系统简介：1、JAVA类的面相对象的应用，拥有异常处理机制，不会因为输入错误而导致程序崩溃2、主要有5个类，即Account账户类SaveAccount储蓄账户类：不能透支CreditAccount信用账户类：可以透支Bank银行类ATMATM类 类的具体属性级行为见代码 3、各个类之间的相互关系，涉与继承
2、、封装、多态、抽象，在多态中又涉与重载和重 写，请读者注意相关联系关注注释 4、可以实现数据保存功能，数据将保存在文件中即当你注册了一个账户，下次再登 陆系统时，可以实现与上次最后的操作相衔接 5、账户号自动生成，比拟符合现实 5.转账一个账户到另一个账户等 7、运行时界面简示1.初始界面账户登录须知事项：1、本系统采用的编程环境是JDK1.7，jer7。所以，运行代码需要保持电脑上所装的JDK为1.7以上版本，如有报错，只需换个高一点的版本即可。注意：第一次装JDK，要配置环境变量请查阅相关资料，比拟简单2、本系统代码涉与到包，所以如果报名不一致就会报错，解决方法：修改一下包名即可3、建议把
3、各个类写在同一个包下面，且每一个类单独写一个java文件，如如下图：4、在运行程序前，需要在项目下面新建一个account.txt用来保存数据文件如上图，并在其中写入至少一个账户信息，如如下图，其中每项代表的意思，请读者参照代码内的注释，否如此在初始化的时候会因为找不到账户信息，从而产生异常。系统源码：Account类package .qx;/包名/* */publicabstractclass Account /属性protectedlong id;protected String password;protected String name;protected String personI
4、d;protectedint accountType;protecteddouble balance;/构造方法public Account()super();public Account(long id, String password, String name, String personId,int accoutType,double balance) super();this.id = id;this.password = password;this.name = name;this.personId = personId;this.accountType = accountType;
5、this.balance = balance;/getXxx,setXxx方法publiclong getId() return id;publicvoid setId(long id) this.id = id;public String getPassword() return password;publicvoid setPassword(String password) this.password = password;public String getName() return name;publicvoid setName(String name) this.name = name
6、;public String getPersonId() return personId;publicvoid setPersonId(String personId) this.personId = personId;publicint getAccountType() return accountType;publicvoid setAccountType(int accountType) this.accountType = accountType;publicdouble getBalance() return balance;publicvoid setBalance(double
7、balance) this.balance = balance;/* * 存款 */publicvoid deposit(double money)balance += money;/* * 取款取款方式由账户类型决定，所以设为抽象方法，相应的Account类应设为抽象类 */publicabstractvoid withdraw(double money);SavingAccount类package .qx;/* * 储蓄账户类 */publicclass SavingAccount extends Account /构造函数public SavingAccount() super();pu
8、blic SavingAccount(long id, String password, String name, String personId,int accountType, double balance) super(id, password, name, personId, accountType, balance);/对父类的withdraw()实现publicvoid withdraw(double money)if(balance money)System.out.println(对不起，账户余额不足！);elsebalance -= money;CresitAccount类p
9、ackage .qx;/* * 信用账户类，增加一个信用额度ceiling属性 */publicclass CreditAccount extends Accountprivateint ceiling;/构造函数public CreditAccount()super();public CreditAccount(long id, String password, String name,String personId,int accountType, double balance, int ceiling)super(id, password, name, personId, account
10、Type, balance);this.ceiling = ceiling;/getXxx,setXxx方法publicint getCeiling() return ceiling;publicvoid setCeiling(int ceiling) this.ceiling = ceiling;/实现父类的withdraw()publicvoid withdraw(double money)if(balance + ceiling) = accounts.length)/扩容Account newAccounts = new Accountaccounts.length*2;/copy原来
11、的相关数据System.arraycopy(accounts, 0, newAccounts, 0, accounts.length);/将newAccounts赋给accountsaccounts = newAccounts;accountsnumber = account;elseaccountsnumber = account;System.out.println(开户成功！账户信息见下);System.out.println(您的卡号为：+id+n+您的密码为：+passwd1+n+您的户名为：+name+n+您的某某号为：+personId+n+您的账户类型为：+type+n);ac
12、count.accountType = type;number+;id+;return account;/此时开户成功elseSystem.out.println(对不起！您两次密码输入不匹配，开户失败！);return null;/此时开户失败/* * 保存数据 */public void saveAccountDate()BufferedWriter bufWriter=null;try Properties props=System.getProperties();String path=props.getProperty(user.dir);bufWriter=new Buffered
13、Writer(new FileWriter(new File(path,account.txt);for(int i = 0;i accounts.length;i+)/假如存在账户if(accountsi != null)bufWriter.write(accountsi.id+,);bufWriter.write(accountsi.getPassword()+,);bufWriter.write(accountsi.getName()+,);bufWriter.write(accountsi.getPersonId()+,);bufWriter.write(accountsi.getAc
14、countType()+,);bufWriter.write(Double.toString(accountsi.getBalance();bufWriter.newLine();elsebreak;bufWriter.flush();/清空缓存中的内容 catch (IOException e) / TODO Auto-generated catch blocke.printStackTrace();finallytry if(bufWriter!=null)bufWriter.close(); catch (IOException e) / TODO Auto-generated catc
15、h blocke.printStackTrace();/* * 登录验证 */public Account verifyAccount(long id, String password)Account account = null;for(int i = 0;i accounts.length;i+)/假如存在账户if(accountsi != null)/验证id号和passwordif(id = accountsi.getId() & password.equals(accountsi.getPassword()account = accountsi;break;elsebreak;ret
16、urn account;/* * 转账验证方法的重载 */public Account verifyAccount(long id)Account account = null;for(int i = 0;i accounts.length;i+)/假如存在账户if(accountsi != null)/验证id号和passwordif(id = accountsi.getId()account = accountsi;break;elsebreak;return account;/* * 转账 */public void transferAccount(Account account1, A
17、ccount 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.withdraw(money);ATM类package .qx;import java.io.BufferedReader;import
18、java.io.BufferedWriter;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.util.Properties;import java.util.Scanner;/* * ATM类，提供用户界面操作 */public class ATM /属性private Bank bank;/构造函数public ATM() bank = new Bank();/main方法public static void main(String args)ATM atm = new
19、ATM();/实例化ATMBank bank = atm.bank;/标号，判断是否退出一级菜单boolean firstFlag = true;while(firstFlag)/一级菜单System.out.println(*欢迎使用XXX银行模拟ATM系统，请按如下步骤操作*);System.out.println( *1.用已有账户登录);System.out.println( *2.没有账户，开户);System.out.println( *3.退出);Scanner scanner = new Scanner(System.in);System.out.print(请选择：);try
20、 int choice1 = scanner.nextInt();switch(choice1)case 1:scanner = new Scanner(System.in);System.out.print(请输入银行卡号：);long id = scanner.nextInt();scanner = new Scanner(System.in);System.out.print(请输入银行密码：);String password = scanner.next();Account account = bank.verifyAccount(id, password);if(account !=
21、 null)/标号，判断是否退出二级菜单boolean secondFlag = true;while(secondFlag)/二级菜单System.out.println(*欢迎使用XXX银行模拟ATM系统，请按如下步骤操作*);System.out.println( *1.查询账户余额);System.out.println( *2.存款);System.out.println( *3.取款);System.out.println( *4.转账);System.out.println( *5.退卡);scanner = new Scanner(System.in);System.out.p
22、rint(请选择：);try int choice2 = scanner.nextInt();switch(choice2)case 1:System.out.println(您账户的当前余额为：+account.getBalance();break;case 2:scanner = new Scanner(System.in);System.out.print(请输入您的存款金额：);double money1 = scanner.nextDouble();bank.deposit(account, money1);break;case 3:scanner = new Scanner(Sys
23、tem.in);System.out.print(请输入您的取款金额：);double money2 = scanner.nextDouble();bank.withdraw(account, money2);break;case 4:scanner = new Scanner(System.in);System.out.print(请输入您要转入账户的卡号：);long id2 = scanner.nextLong();Account account2 = bank.verifyAccount(id2);if(account2 != null)scanner = new Scanner(Sy
24、stem.in);System.out.print(请输入您要转入账户的金额：);double money = scanner.nextLong();if(money = account.balance)bank.transferAccount(account, account2, money);System.out.println(转账成功！);elseSystem.out.println(抱歉，您账户没有足够的金额！请查看后重新选择输入！);elseSystem.out.println(抱歉，没有找到您要转入的账户信息！请核对后重新选择输入！);break;case 5:secondFla
25、g = false;break;default:System.out.println(没有该选项，请重新选择！);break; catch (Exception e) System.out.println(选择输入不合法，请重新选择！);elseSystem.out.println(没有此账户，请先开户！);break;case 2:/账号id由银行自动提供从1001递增scanner = new Scanner(System.in);System.out.print(请输入账户密码：);String passwd1 = scanner.next();scanner = new Scanner
26、(System.in);System.out.print(请再输入账户密码：);String passwd2 = scanner.next();scanner = new Scanner(System.in);System.out.print(请输入户主某某：);String name = scanner.next();scanner = new Scanner(System.in);System.out.print(请输入户主某某：);String personId = scanner.next();scanner = new Scanner(System.in);System.out.pr
27、int(请输入账户类型0储蓄，1信用：);int type = scanner.nextInt();bank.openAccount(passwd1, passwd2, name, personId, type);break;case 3:bank.saveAccountDate();firstFlag = false;break;default :System.out.println(没有该选项，请重新选择！);break; catch (Exception e) System.out.println(选择输入不合法，请重新选择！);System.out.println(谢谢使用！);- 17 - / 17
