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can you show me an example my professor has not covered that material yet...

Im stuck on how to create methods for the sumofodd/even places method. What i have is below....:-t:-t



import javax.swing.JOptionPane;
import java.util.Scanner;

public class CreditCard{...

2. Write a program to determine whether an input credit number is valid according to the Luhn check. Prompt the user for a credit card number as a long integer and display whether the number is...