public class TestBankAccount {
    public static void main(String[] args) {
        // 创建银行账户
        BankAccount account = new BankAccount("123456789", "张三");
        
        // 显示初始账户信息
        System.out.println("初始账户信息：");
        account.displayInfo();
        
        // 测试存款
        System.out.println("测试存款：");
        account.deposit(1000);
        account.deposit(-500); // 测试非法存款金额
        
        // 测试取款
        System.out.println("测试取款：");
        account.withdraw(500);
        account.withdraw(1000); // 测试余额不足
        account.withdraw(-200); // 测试非法取款金额
        
        // 测试修改户主姓名
        System.out.println("测试修改户主姓名：");
        account.setOwnerName("李四");
        account.displayInfo();
        
        // 测试查询余额
        System.out.println("当前余额：" + account.getBalance());
    }
}