Write a program that will generate a set of valid credit card numbers for a particular bank.

Step 1: Prompt the user to enter their 4-digit bank identifier. The user will then be

prompted to specify the quantity of valid 16-digit credit card numbers that they would like generated.

Input is as follows:

Enter the first four digits of credit card numbers:

Enter quantity of credit card numbers to generate:

If a user enters an invalid value, the program should notify the user that the value entered is incorrect,

and why, and prompt the user to reenter a corrected value.

Step 2:

The program will randomly generate the quantity of credit card numbers specified

by the user, with the first 4 digits being those provided by the user.

To generate a valid number, we will need to

1. Randomly generate the number

2. Test the number generated to make sure that it adheres to the correct credit card format

3. If the number fails the test, we will need to continue to generate another random number until

we find one that satisfies the required format.

BREAK THE CREDIT CARD NUMBER INTO SMALLER PIECES (e.g., 4 numbers of 4 digits, rather

than 1 number of 16 digits).

• The calculations needed to test the generated number can performed on the smaller pieces and

then added together to get the calculation on the full 16 digit credit card number.

• Note: the calculations on the first 4 digits only needs to be calculated once, since it will be the same for every credit card number that we generate.

1. TO RANDOMLY GENERATE THE NUMBER

USE THE FORMULA TO GENERATE A RANDOM NUMBER:

min + (int)(Math.random() * ((max - min) + 1))

2. TO TEST THE NUMBER GENERATED

A credit card number is valid if step 4 in the following check is confirmed:

1. Form the sum of all digits.

2. The result is divisible by 10.

Step 3: Output. The program will print out the valid credit card numbers generated

Valid Credit Card Numbers Generated:

4212346231729310

4212967811827381

4212448847490724

4212764281824108

4212110033271698

4212151546052688

4212740737468230

4212493897910362

4212007218859722

4212968498084285

When printing our generated number, we need to be sure to print any leading zeros. For example, if our

generated number is broken down into the following 4 numbers of 4 digits:

4012

689

4202

35

These need to be printed with leading zeros for the 2nd and 4th number:

4012068942020035