JAVA创建银行卡类并设计银行卡的两个子类

好的，我可以回答这个问题。以下是JAVA创建银行卡类并设计银行卡的两个子类的代码示例：

public class BankCard {
    private String cardNumber;
    private String cardHolderName;
    private double balance;

    public BankCard(String cardNumber, String cardHolderName, double balance) {
        this.cardNumber = cardNumber;
        this.cardHolderName = cardHolderName;
        this.balance = balance;
    }

    public String getCardNumber() {
        return cardNumber;
    }

    public String getCardHolderName() {
        return cardHolderName;
    }

    public double getBalance() {
        return balance;
    }

    public void deposit(double amount) {
        balance += amount;
    }

    public void withdraw(double amount) {
        balance -= amount;
    }
}

public class CreditCard extends BankCard {
    private double creditLimit;
    private double interestRate;

    public CreditCard(String cardNumber, String cardHolderName, double balance, double creditLimit, double interestRate) {
        super(cardNumber, cardHolderName, balance);
        this.creditLimit = creditLimit;
        this.interestRate = interestRate;
    }

    public double getCreditLimit() {
        return creditLimit;
    }

    public double getInterestRate() {
        return interestRate;
    }

    public void setCreditLimit(double creditLimit) {
        this.creditLimit = creditLimit;
    }

    public void setInterestRate(double interestRate) {
        this.interestRate = interestRate;
    }

    public double calculateInterest() {
        return getBalance() * interestRate;
    }
}

public class DebitCard extends BankCard {
    private String pin;

    public DebitCard(String cardNumber, String cardHolderName, double balance, String pin) {
        super(cardNumber, cardHolderName, balance);
        this.pin = pin;
    }

    public String getPin() {
        return pin;
    }

    public void setPin(String pin) {
        this.pin = pin;
    }

    public void withdraw(double amount, String pin) {
        if (this.pin.equals(pin)) {
            super.withdraw(amount);
        } else {
            System.out.println("Invalid PIN");
        }
    }
}

这里我们创建了一个名为 BankCard 的类，它有三个属性：卡号、持卡人姓名和余额。它还有两个方法：存款和取款。我们还创建了两个子类：CreditCard 和 DebitCard。CreditCard 类有两个额外的属性：信用额度和利率，以及一个计算利息的方法。DebitCard 类有一个额外的属性：PIN 码，以及一个带有 PIN 码验证的取款方法。