模拟银行存取款业务java

模拟银行存取款业务在Java中通常涉及设计一个简单的银行账户类(BankAccount)和相关的操作类(如DepositService、WithdrawalService等)，以及一些基本的用户管理。以下是简化的步骤和代码示例：

1. 定义BankAccount类：

public class BankAccount {
    private String accountNumber;
    private double balance;

    public BankAccount(String accountNumber, double initialBalance) {
        this.accountNumber = accountNumber;
        this.balance = initialBalance;
    }

    // 存款方法
    public void deposit(double amount) {
        if (amount > 0) {
            balance += amount;
        }
    }

    // 取款方法
    public boolean withdraw(double amount) {
        if (amount > 0 && amount <= balance) {
            balance -= amount;
            return true;
        } else {
            return false; // 资金不足或尝试取款金额大于当前余额
        }
    }

    // 获取余额
    public double getBalance() {
        return balance;
    }

    // 其他可能的方法，如查询交易记录等
}

2. 创建服务类(Services)：

public class DepositService {
    public void performDeposit(BankAccount account, double amount) {
        account.deposit(amount);
        System.out.println("存款成功，账户余额：" + account.getBalance());
    }
}

public class WithdrawalService {
    public boolean performWithdrawal(BankAccount account, double amount) {
        return account.withdraw(amount);
    }
}

3. 用户界面(User Interface):

public class BankApp {
    public static void main(String[] args) {
        BankAccount customerAccount = new BankAccount("123456", 1000.00);
        DepositService depositService = new DepositService();
        WithdrawalService withdrawalService = new WithdrawalService();

        // 存款示例
        depositService.performDeposit(customerAccount, 500);

        // 取款示例
        boolean success = withdrawalService.performWithdrawal(customerAccount, 200);
        if (success) {
            System.out.println("取款成功");
        } else {
            System.out.println("取款失败");
        }

        // 查看余额
        System.out.println("当前余额：" + customerAccount.getBalance());
    }
}