今日报告

用Java代码模拟实现课堂上的“银行账户”的实例，要求编写客户端测试代码模拟用户存款和取款，注意账户对象状态和行为的变化。

 

BankAccount.java

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

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

    public void deposit(double amount) {
        if (amount > 0) {
            balance += amount;
            System.out.println("张纸存款 $" + amount + " 成功。当前余额为 $" + balance);
        } else {
            System.out.println("无效的存款金额");
        }
    }

    public void withdraw(double amount) {
        if (amount > 0 && amount <= balance) {
            balance -= amount;
            System.out.println("张纸取款 $" + amount + " 成功。当前余额为 $" + balance);
        } else {
            System.out.println("无效的取款金额或余额不足");
        }
    }

    public double getBalance() {
        return balance;
    }

    public String getAccountNumber() {
        return accountNumber;
    }
}

BankAccountTest.java

 

public class BankAccountTest {
    public static void main(String[] args) {
        BankAccount account = new BankAccount("12345", 1000.0);

        System.out.println("初始余额： $" + account.getBalance());
        account.deposit(500.0);
        account.withdraw(200.0);
        account.withdraw(1500.0);
    }
}