UnionPay

package oo.day05;





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



interface ABC extends UnionPayABC {
   //增加透支功能
   public boolean payTelBill(String phoneNum,double sum);
}

//农行卡
class ABCImpl implements ABC{
    
     String pwd;
     double balance; 
     ABCImpl(String pwd,double balance){
         
         this.balance=balance;
         this.pwd = pwd;
     }
     

    @Override
    public boolean payTelBill(String phoneNum, double sum) {
        return false;
    }

    @Override
    public boolean checkPwd(String input) {
      if(pwd.equals("input")){
            
            return true;
        }
      else
          return false;
    }

    @Override
    public boolean drawMoney(double number) {
        if((balance-number)>-2000){
            balance -= number;
            return true;
        }
        else
        return false;
    }

    @Override
    public double getBalance() {
        return balance;
    } 
}

package oo.day05;


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

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



//工商卡
class ICBCImpl implements ICBC{
    
    private String pwd;
    private double balance;
    
    ICBCImpl(String pwd,double balance){    
        this.balance=balance;
        this.pwd = pwd;
    }
    

    public void payOnline(double number) {    
        

        if(number<balance){
            
            balance-=number;
        }
    }

    @Override
    public boolean checkPwd(String input) {
        if(pwd.equals("input")){
            
            return true;
        }
        else
        return false;
    }

    @Override
    public boolean drawMoney(double number) {
        
        if(number<balance){
            
            balance-=number;
            return true;
        }
        else
        return false;
    }

    @Override
    public double getBalance() {
        
        
        return balance;
    }
}  

package oo.day05;

import java.util.Scanner; 

public class UnionPayText {

    
    public static void main(String[] args) {
        /*
        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());
            
        }*/
            
            
            

            UnionPayABC 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());
            
        }
         
    }

    }