农行ATM小案例

 1 package oo.day06;
 2
 3 import java.util.Scanner;
 4
 5 public class ATM {
 6
 7     UnionPay card;
 8
 9     public void insertcard(UnionPay card){
10
11         this.card = card;
12     }
13
14
15     public void PayTelbill(){
16
17              Scanner input = new Scanner(System.in);
18
19             if(card instanceof ABC){
20                 ABC Card = (ABC)card;
21                 System.out.println("请输入电话号码：");
22                 String phoneNum = input.next();
23                 System.out.println("请输入缴费额：");
24                 //double number = Double.parseDouble(input.next());
25                 double number = input.nextDouble();
26
27                 if(Card.payTelBill(phoneNum,number)){
28                     //System.out.println(card.getBalance());
29                     System.out.println("缴费成功");
30                 }else{
31                     System.out.println("缴费失败");
32                 }
33
34             }else{
35                 System.out.println("您的卡不是农业银行卡，无法完成缴费");
36             }
37     }
38
39
40     public void drawmoney(){
41         Scanner input = new Scanner(System.in);
42         System.out.println("请输入取钱金额：");
43         double number = input.nextDouble();
44         if(card.drawMoney(number)){
45
46             System.out.println("取钱成功！");
47         }
48     }
49
50     public void checkPwd(){
51
52         Scanner input = new Scanner(System.in);
53          System.out.println("请输入密码：");
54          String mima =input.next();
55          System.out.println("请选择功能：");
56          System.out.println("1.查询余额  2.取款   3.缴电话费");
57          int n = input.nextInt();
58          switch(n){
59
60          case 1:
61          //card.getBalance();
62          System.out.println(card.getBalance());
63          break;
64          case 2:
65              drawmoney();break;
66          case 3:
67              PayTelbill();break;
68          }
69
70
71     }
72
73
74
75 }

 1 package oo.day06;
 2
 3
 4 //农行卡
 5 class ABCImpl implements ABC{
 6
 7      private String pwd;
 8      private double balance;
 9      ABCImpl(String pwd,double balance){
10
11          this.balance=balance;
12          this.pwd = pwd;
13      }
14
15
16     @Override
17     public boolean payTelBill(String phoneNum, double number) {
18
19          if(phoneNum.length() == 11 && (balance-number)>=-2000){
20
21                 balance-=number;
22
23                  return true;
24          }
25          else
26             return false;
27     }
28
29     @Override
30     public boolean checkPwd(String mima) {
31       if(pwd.equals("mima")){
32
33             return true;
34         }
35       else
36           return false;
37     }
38
39     @Override
40     public boolean drawMoney(double number) {
41         if((balance-number)>-2000){
42             balance -= number;
43             return true;
44         }
45         else
46         return false;
47     }
48
49     @Override
50     public double getBalance() {
51         return balance;
52     }
53 }

package oo.day06;

import java.util.Scanner; 

public class UnionPayText {

    public static void main(String[] args) {

        ATM atm = new ATM();

        ABCImpl card = new ABCImpl("123456",2000);

        atm.insertcard(card);

        atm.checkPwd();

        /*
        UnionPayICBC icbc = new ICBCImpl("123456",3000);

        Scanner scan =new Scanner(System.in);
        System.out.println("请输入密码：");

        String input = scan.next();
        boolean str= icbc.checkPwd(input);
        System.out.println("请输入金额：");

        double number = scan.nextInt();

        //icbc.payOnline(100);

        if(icbc.drawMoney(number)){

            System.out.println("取钱成功，卡上余额为："+icbc.getBalance());

        }*/

/*
            UnionPay abc = new ABCImpl("123456",3000);

            Scanner scann =new Scanner(System.in);
            System.out.println("请输入密码：");

            String inp = scann.next();
            boolean str1= abc.checkPwd(inp);
            System.out.println("请输入金额：");

            double number1 = scann.nextInt();

            //icbc.payOnline(100);

            if(abc.drawMoney(number1)){

                System.out.println("取钱成功，卡上余额为："+abc.getBalance());

        }
         */
    }

}

package oo.day06;

public interface UnionPay{

     //查询余额
   double getBalance();
 //取钱
   boolean drawMoney(double number);
 //检查密码
   boolean checkPwd(String input);
}

interface ICBC extends UnionPay{
   //增加的在线支付功能
   public void payOnline(double number);

}

interface ABC extends UnionPay{
       //增加的在线支付功能
       public boolean payTelBill(String phoneNum, double number);

    }