Question

How do I allow the user to re enter the customerID number if it does not match 5 digits in length?

    for (int i = 0; i < 5; i++) {
        System.out.println("Enter the 5-digit ID number of your customer "
                + (i + 1) + "'s below:");
        customerID[i] = myScanner.nextLine();

        if (customerID[i].length() != 5) {
            // What code goes here. I just want to make it so they can
            // re-enter the customerID
        }

Answer 1

Here is one way to do it:

while(true)
{
    customerID[i] = myScanner.nextLine();
    if(customerID[i].length() == 5) break;
    System.out.print("Should be of length 5! Try Again: ");
}