public class TestBankAccount{    
     //测试方法（main方法，用于验证功能）
     public static void main(String[] args) {
         // 创建账户
         BankAccount account = new BankAccount("622202123456789", "张三");
         
         // 测试查询
         System.out.println("账户号：" + account.getAccountNumber());
         System.out.println("户主姓名：" + account.getOwnerName());
         System.out.println("初始余额：" + account.getBalance());
         
         // 测试修改户主姓名
         account.setOwnerName("李四");
         System.out.println("修改后户主姓名：" + account.getOwnerName());
         
         // 测试存款
         account.deposit(1000);
         account.deposit(-500); // 测试无效存款
         
         // 测试取款
         account.withdraw(300);
         account.withdraw(800); // 测试余额不足
         account.withdraw(-200); // 测试无效取款
     }
 }