Java Program to Check Credit Card Type by Credit Score

Learn a java program to check credit card type by credit Score of a customer. In this tutorial, we will create a Java program that determines whether a customer qualifies for a Silver, Gold, or Platinum credit card using if-else conditions.

Code Explanation (Step-by-Step)

  • Create a Scanner object to take user input.
  • Read the customer’s credit score.
  • Check whether the score is between 400 and 850.
  • If the score is outside this range, display Invalid credit score.
  • If the score is between 400 and 599, issue a Silver Card.
  • If the score is between 600 and 799, issue a Gold Card.
  • If the score is between 800 and 850, issue a Platinum Card.
  • Close the Scanner object.
				
					import java.util.Scanner;

public class CreditCardIssue {
    public static void main(String[] args) {

        System.out.println("Enter the customer Credit Score :-");
        Scanner sc = new Scanner(System.in);
        int userScore = sc.nextInt();

        System.out.println("Customer credit card type is :- ");

        if (userScore < 400 || userScore > 850) {
            System.out.println("Invalid credit score");
        } else {
            if (userScore >= 400 && userScore < 600) {
                System.out.println("Silver Card");
            } else if (userScore >= 600 && userScore < 800) {
                System.out.println("Gold Card");
            } else {
                System.out.println("Platinum Card");
            }
        }

        sc.close();
    }
}

Output :-
Enter the customer Credit Score :-
550
Customer credit card type is :-
Silver Card

Java Program to Check Credit Card Type

This program identifies the credit card type based on the card number prefix and length using a separate method and startsWith().

				
					import java.util.Scanner;

public class CreditCardTypeChecker {

    public static String getCardType(String cardNumber) {

        int length = cardNumber.length();

        if ((length == 13 || length == 16) && cardNumber.startsWith("4")) {
            return "Visa";
        }

        if (length == 16) {
            String prefix = cardNumber.substring(0, 2);
            int value = Integer.parseInt(prefix);

            if (value >= 51 && value <= 55) {
                return "MasterCard";
            }
        }

        if (length == 15 &&
            (cardNumber.startsWith("34") || cardNumber.startsWith("37"))) {
            return "American Express";
        }

        if (length == 16 && cardNumber.startsWith("6011")) {
            return "Discover";
        }

        return "Unknown Card Type";
    }

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter Credit Card Number: ");
        String cardNumber = sc.nextLine();

        System.out.println("Card Type: " + getCardType(cardNumber));

        sc.close();
    }
}

Output :-
Enter Credit Card Number: 4111111111111123
Card Type: Visa

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