UnionPay

 1 package oo.day05;
 2
 3
 4
 5
 6
 7 public interface UnionPayABC{
 8
 9      //查询余额
10    double getBalance();
11  //取钱
12    boolean drawMoney(double number);
13  //检查密码
14    boolean checkPwd(String input);
15 }
16
17
18
19 interface ABC extends UnionPayABC {
20    //增加透支功能
21    public boolean payTelBill(String phoneNum,double sum);
22 }
23
24 //农行卡
25 class ABCImpl implements ABC{
26
27      String pwd;
28      double balance;
29      ABCImpl(String pwd,double balance){
30
31          this.balance=balance;
32          this.pwd = pwd;
33      }
34
35
36     @Override
37     public boolean payTelBill(String phoneNum, double sum) {
38         return false;
39     }
40
41     @Override
42     public boolean checkPwd(String input) {
43       if(pwd.equals("input")){
44
45             return true;
46         }
47       else
48           return false;
49     }
50
51     @Override
52     public boolean drawMoney(double number) {
53         if((balance-number)>-2000){
54             balance -= number;
55             return true;
56         }
57         else
58         return false;
59     }
60
61     @Override
62     public double getBalance() {
63         return balance;
64     }
65 }

 1 package oo.day05;
 2
 3
 4 public interface UnionPayICBC{
 5
 6      //查询余额
 7     double getBalance();
 8   //取钱
 9     boolean drawMoney(double number);
10   //检查密码
11     boolean checkPwd(String input);
12 }
13
14 interface ICBC extends UnionPayICBC{
15     //增加的在线支付功能
16     public void payOnline(double number);
17
18
19 }
20
21
22
23 //工商卡
24 class ICBCImpl implements ICBC{
25
26     private String pwd;
27     private double balance;
28
29     ICBCImpl(String pwd,double balance){
30         this.balance=balance;
31         this.pwd = pwd;
32     }
33
34
35     public void payOnline(double number) {
36
37
38         if(number<balance){
39
40             balance-=number;
41         }
42     }
43
44     @Override
45     public boolean checkPwd(String input) {
46         if(pwd.equals("input")){
47
48             return true;
49         }
50         else
51         return false;
52     }
53
54     @Override
55     public boolean drawMoney(double number) {
56
57         if(number<balance){
58
59             balance-=number;
60             return true;
61         }
62         else
63         return false;
64     }
65
66     @Override
67     public double getBalance() {
68
69
70         return balance;
71     }
72 }  

 1 package oo.day05;
 2
 3 import java.util.Scanner;
 4
 5 public class UnionPayText {
 6
 7
 8     public static void main(String[] args) {
 9         /*
10         UnionPayICBC icbc = new ICBCImpl("123456",3000);
11
12         Scanner scan =new Scanner(System.in);
13         System.out.println("请输入密码：");
14
15         String input = scan.next();
16         boolean str= icbc.checkPwd(input);
17         System.out.println("请输入金额：");
18
19         double number = scan.nextInt();
20
21         //icbc.payOnline(100);
22
23         if(icbc.drawMoney(number)){
24
25             System.out.println("取钱成功，卡上余额为："+icbc.getBalance());
26
27         }*/
28
29
30
31
32             UnionPayABC abc = new ABCImpl("123456",3000);
33
34             Scanner scann =new Scanner(System.in);
35             System.out.println("请输入密码：");
36
37             String inp = scann.next();
38             boolean str1= abc.checkPwd(inp);
39             System.out.println("请输入金额：");
40
41             double number1 = scann.nextInt();
42
43             //icbc.payOnline(100);
44
45             if(abc.drawMoney(number1)){
46
47                 System.out.println("取钱成功，卡上余额为："+abc.getBalance());
48
49         }
50
51     }
52
53     }
54
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