使用java语言，设计一个银行账户挂历系统，具体功能为：开户、存款、取款、转账、查询、修改密码、销户，请给出设计思路

设计思路： 1. 首先，需要创建一个账户类(Account)，该类包含以下属性： - 账户号码（accountNumber） - 账户余额（balance） - 账户持有人姓名（accountHolderName） - 账户持有人地址（accountHolderAddress） - 账户持有人电话号码（accountHolderPhoneNumber） - 账户密码（password） 2. 接下来，创建一个银行类(Bank)，该类包含以下属性： - 银行名称（bankName） - 所有账户的列表（accountsList） 3. 在银行类中实现如下方法： - 开户（createAccount）：输入账户的基本信息，生成账户号码并存入账户列表中。 - 存款（deposit）：输入账户号码和存款金额，将账户余额增加存款金额。 - 取款（withdraw）：输入账户号码和取款金额，将账户余额减去取款金额。 - 转账（transfer）：输入源账户号码、目标账户号码和转账金额，将源账户余额减去转账金额，目标账户余额增加转账金额。 - 查询（getAccountDetails）：输入账户号码，返回账户的基本信息和余额。 - 修改密码（changePassword）：输入账户号码和新密码，将账户的密码修改为新密码。 - 销户（deleteAccount）：输入账户号码，将该账户从账户列表中删除。 4. 在主函数中，创建银行对象和账户对象，并调用各个方法进行操作。 代码实现： 1. Account 类的代码实现： ```java public class Account { private String accountNumber; private double balance; private String accountHolderName; private String accountHolderAddress; private String accountHolderPhoneNumber; private String password; public Account(String accountNumber, String accountHolderName, String accountHolderAddress, String accountHolderPhoneNumber, String password) { this.accountNumber = accountNumber; this.balance = 0.0; this.accountHolderName = accountHolderName; this.accountHolderAddress = accountHolderAddress; this.accountHolderPhoneNumber = accountHolderPhoneNumber; this.password = password; } public String getAccountNumber() { return accountNumber; } public double getBalance() { return balance; } public String getAccountHolderName() { return accountHolderName; } public String getAccountHolderAddress() { return accountHolderAddress; } public String getAccountHolderPhoneNumber() { return accountHolderPhoneNumber; } public String getPassword() { return password; } public void deposit(double amount) { balance += amount; } public void withdraw(double amount) { if (amount <= balance) { balance -= amount; } else { System.out.println("Insufficient balance!"); } } public void transfer(Account targetAccount, double amount) { if (amount <= balance) { balance -= amount; targetAccount.deposit(amount); } else { System.out.println("Insufficient balance!"); } } public String getAccountDetails() { return "Account Number: " + accountNumber + "\n" + "Account Holder Name: " + accountHolderName + "\n" + "Account Holder Address: " + accountHolderAddress + "\n" + "Account Holder Phone Number: " + accountHolderPhoneNumber + "\n" + "Account Balance: " + balance; } public void changePassword(String newPassword) { password = newPassword; } } ``` 2. Bank 类的代码实现： ```java import java.util.ArrayList; import java.util.List; public class Bank { private String bankName; private List<Account> accountsList; public Bank(String bankName) { this.bankName = bankName; this.accountsList = new ArrayList<Account>(); } public Account createAccount(String accountHolderName, String accountHolderAddress, String accountHolderPhoneNumber, String password) { String accountNumber = String.valueOf(accountsList.size() + 1); Account account = new Account(accountNumber, accountHolderName, accountHolderAddress, accountHolderPhoneNumber, password); accountsList.add(account); return account; } public void deposit(String accountNumber, double amount) { Account account = getAccountByNumber(accountNumber); if (account != null) { account.deposit(amount); } else { System.out.println("Account not found!"); } } public void withdraw(String accountNumber, double amount) { Account account = getAccountByNumber(accountNumber); if (account != null) { account.withdraw(amount); } else { System.out.println("Account not found!"); } } public void transfer(String sourceAccountNumber, String targetAccountNumber, double amount) { Account sourceAccount = getAccountByNumber(sourceAccountNumber); Account targetAccount = getAccountByNumber(targetAccountNumber); if (sourceAccount != null && targetAccount != null) { sourceAccount.transfer(targetAccount, amount); } else { System.out.println("Account not found!"); } } public String getAccountDetails(String accountNumber) { Account account = getAccountByNumber(accountNumber); if (account != null) { return account.getAccountDetails(); } else { return "Account not found!"; } } public void changePassword(String accountNumber, String newPassword) { Account account = getAccountByNumber(accountNumber); if (account != null) { account.changePassword(newPassword); } else { System.out.println("Account not found!"); } } public void deleteAccount(String accountNumber) { Account account = getAccountByNumber(accountNumber); if (account != null) { accountsList.remove(account); } else { System.out.println("Account not found!"); } } private Account getAccountByNumber(String accountNumber) { for (Account account : accountsList) { if (account.getAccountNumber().equals(accountNumber)) { return account; } } return null; } } ``` 3. 主函数的代码实现： ```java public static void main(String[] args) { Bank bank = new Bank("ABC Bank"); // Create an account Account account1 = bank.createAccount("John Doe", "123 Main St", "555-1234", "password123"); // Deposit money bank.deposit(account1.getAccountNumber(), 1000.0); // Withdraw money bank.withdraw(account1.getAccountNumber(), 500.0); // Transfer money Account account2 = bank.createAccount("Jane Doe", "456 Main St", "555-5678", "password456"); bank.transfer(account1.getAccountNumber(), account2.getAccountNumber(), 200.0); // Get account details System.out.println(bank.getAccountDetails(account1.getAccountNumber())); // Change password bank.changePassword(account1.getAccountNumber(), "newpassword"); // Delete account bank.deleteAccount(account1.getAccountNumber()); } ```