Question

credit card processing project

Answer 1

`Hey,

Note: In case of any queries, just comment in box I would be very happy to assist all your queries

CreditCard.java
import java.util.*;
public class CreditCard
{
String name;
String cardNumber;
double balance;
double spendingLimit;
// constructor
CreditCard(String name, String cardNumber)
{
this.name = name;
// check if the length of card number is 16
if(cardNumber.length() == 16)
this.cardNumber = cardNumber;
else
{
System.out.println("Card Number is invalid. It should be 16 character long!");
System.exit(0);
}
this.balance = 0.0;
this.spendingLimit = 2000.0;
}
// accessor methods
public String getName()
{
return this.name;
}
public String getCardNumber()
{
return this.cardNumber;
}
public double getBalance()
{
return this.balance;
}
public double getSpendingLimit()
{
return this.spendingLimit;
}
// make a purchase
public void purchase(double amount)
{
this.balance += amount;
}
// increase Spending Limit by $50 each time it is called
public void increaseSpendingLimit()
{
this.spendingLimit += 50.0;
}
// reset balance to $0
public void payBill()
{
this.balance = 0;
}
public String toString()
{
String ans = "Name : " + this.name + "\n";
ans += "Card Number : " + this.cardNumber + "\n";
ans += "Balance : " + this.balance + "\n";
ans += "Spending Limit : " + this.spendingLimit + "\n";
return ans;
}
}
--------------------------- CardTest.java ---------------------------
public class CardTest
{
public static void main(String[] args)
{
// create a credit card object
CreditCard ob = new CreditCard("Chandler Bing", "1234567812345678");
System.out.println(ob);
System.out.println("\nAfter purchasing item of $100 ...\n");
ob.purchase(100);
System.out.println(ob);
System.out.println("\nAfter paying bill ...\n");
ob.payBill();
System.out.println(ob);
System.out.println("\nAfter Increasing Spending Limit ...\n");
ob.increaseSpendingLimit();
System.out.println(ob);
}
}

output:

C:\Users\user\Desktop>javac CardTest.java C:\Users\user\Desktop>java CardTest Name : Chandler Bing Card Number : 1234567812345678 Balance : 0.0 Spending Limit : 2000.0 After purchasing item of $100 ... Name : Chandler Bing Card Number : 1234567812345678 Balance : 100.0 Spending Limit : 2000.0 After paying bill ... Name : Chandler Bing Card Number : 1234567812345678 Balance : 0.0 Spending Limit : 2000.0 After Increasing Spending Limit ... Name : Chandler Bing Card Number : 1234567812345678 Balance : 0.0 Spending Limit : 2050.0

Kindly revert for any queries

Thanks.