한빛미디어

class  AccountList
{
        public static void main(String[] args)
        {
                Account obj1 = new Account("111-111","김영미1",1000);
                Account obj2 = new Account("211-111","김영미2",12000);
                Account obj3 = new CheckingAccount("311-111","김영미3",1000,"555-555-22-33");
                Account obj4 = new Account("411-111","김영미4",10);

                printAccountList(obj1);
                printAccountList(obj2);
                printAccountList(obj3);
                printAccountList(obj4);
        }
        static void printAccountList(Account obj){
                System.out.println("계좌 번호 :"+obj.accountNo);
                System.out.println("이 름 :"+obj.ownerName);
                System.out.println("잔 액 :"+obj.balance);
        -->>        if(obj instanceof CheckingAccount){
                        CheckingAccount obj2 = (CheckingAccount) obj;
                        System.out.println("카드번호 :" +obj2.cardNo);
                }
                System.out.println("============================");
        }
}
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