模拟银行账户管理Java

模拟银行账户管理在Java中通常涉及创建一个BankAccount类，它作为父类或者抽象类，包含了账户的基本属性如账户号码(account number)、余额(balance)以及一些基本操作方法，比如存款(deposit)、取款(withdraw)和查看余额(view balance)。

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

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

    // getter and setter methods for accountNumber and balance
    public String getAccountNumber() { return accountNumber; }
    public void setAccountNumber(String accountNumber) { this.accountNumber = accountNumber; }
    public double getBalance() { return balance; }
    public void setBalance(double balance) { if (balance >= 0) this.balance = balance; else throw new IllegalArgumentException("Balance cannot be negative"); }

    // Abstract method for withdrawal
    public abstract boolean withdraw(double amount);

    // Concrete method for deposit
    public boolean deposit(double amount) {
        if (amount > 0) {
            balance += amount;
            return true;
        } else {
            throw new IllegalArgumentException("Deposit amount must be positive");
        }
    }

    // Method to view balance
    public void viewBalance() {
        System.out.println("Current balance: " + balance);
    }
}

// Concrete classes like SavingsAccount or CheckingAccount extend BankAccount
class SavingsAccount extends BankAccount {
    @Override
    public boolean withdraw(double amount) {
        // Implement savings account specific withdrawal logic here
    }
}

class CheckingAccount extends BankAccount {
    @Override
    public boolean withdraw(double amount) {
        // Implement checking account specific withdrawal logic here
    }
}