Write here a bullet list of the requirements for the user in order to follow this video tutorial.
Hello,in this tutorial i made a program that defines credit cards brand by its number.With this program you can easily find out your credit or bank cards type of brand.
import java.util.*;
public class CreditCardFinder {
public static void main(String[] args) {
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
System.out.println("Write your credit card number :");
String id = input.nextLine();
while (id.length() != 16) {
System.out.println("Wrong Input.Credit Card Must Have 16 Numbers!");
id = input.nextLine();
}
int x = sumAgain(id);
int y = sum(id);
if (isValid(x, y)) {
System.out.println("Your Card Number Is True");type(id);
} else {
System.out.println("Your Card Is Out Of Use ");
}
}
public static int sum(String myid) {
int sum1 = 0;
for (int i = myid.length() - 2; i >= 0; i -= 2) {
int x = Character.getNumericValue(myid.charAt(i));
int y = x * 2;
if (y >= 10) {
int a = (y % 10) + 1;
sum1 += a;
} else
sum1 += y;
}
return sum1;
}
public static int sumAgain(String myid) {
int sum2 = 0;
for (int i = myid.length() - 1; i >= 0; i -= 2) {
int x = Character.getNumericValue(myid.charAt(i));
sum2 += x;
}
return sum2;
}
public static boolean isValid(int x,int y) {
if ((x + y) %10 == 0)
return true;
return false;
}
public static void type(String myid)
{
switch(Character.getNumericValue(myid.charAt(0)))
{
case 3:System.out.println("Your Card Is ---- American Express");break;
case 4:System.out.println("Your Card Is ---- Visa");break;
case 5:System.out.println("Your Card Is ---- Master Card");break;
default:System.out.println("Your Card Is ---- Discover Card");break;
}
}
}