设计一个bankaccount类java

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

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

    public double getBalance() {
        return balance;
    }

    public String getAccountNumber() {
        return accountNumber;
    }

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

    public void withdraw(double amount) {
        if (amount > balance) {
            System.out.println("Insufficient funds.");
        } else {
            balance -= amount;
        }
    }
}

上面是一个简单的银行账户类，可以存钱，取钱，查询余额和账号。

如果需要更多功能，可以继续添加方法。