Java银行账户管理项目实战教学

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

    // 构造方法
    public BankAccount(String accountNumber, String ownerName, double initialBalance) {
        this.accountNumber = accountNumber;
        this.ownerName = ownerName;
        if (initialBalance >= 0) {
            this.balance = initialBalance;
        } else {
            this.balance = 0;
            System.out.println("初始金额不能为负数，已设为0");
        }
    }

    // 存款
    public void deposit(double amount) {
        if (amount > 0) {
            balance += amount;
            System.out.println("成功存入：" + amount);
        } else {
            System.out.println("存款金额必须大于0");
        }
    }

    // 取款
    public boolean withdraw(double amount) {
        if (amount  balance) {
            System.out.println("余额不足，取款失败");
            return false;
        }
        balance -= amount;
        System.out.println("成功取出：" + amount);
        return true;
    }

    // 查询余额
    public double getBalance() {
        return balance;
    }

    // 获取账户信息
    public String getAccountInfo() {
        return "账户号：" + accountNumber +
               "，户主：" + ownerName +
               "，余额：" + balance;
    }
}

public class BankSystem {
    public static void main(String[] args) {
        // 创建两个账户
        BankAccount acc1 = new BankAccount("A001", "张三", 1000);
        BankAccount acc2 = new BankAccount("A002", "李四", 500);

        // 打印初始信息
        System.out.println(acc1.getAccountInfo());
        System.out.println(acc2.getAccountInfo());

        // 模拟操作
        acc1.deposit(200);
        acc1.withdraw(300);

        acc2.withdraw(600); // 余额不足
        acc2.deposit(100);

        // 最终状态
        System.out.println("最终状态：");
        System.out.println(acc1.getAccountInfo());
        System.out.println(acc2.getAccountInfo());
    }
}