Implementing JButton in this circumstance.

Hi all; I am new to Java, and definitely new to Swing. Basically, I am working on a University assignment that involves creating a game of Higher or Lower (the card game). Very simple I know. In the below code, I am taking input at the command line to choose the outcome of the conditionals. My question is, how can I do this using JButtons. So far, I have semi designed the UI in another class, the class also is holding the ActionListeners for the UI objects. I have also instantiated (think that the right term) an instance of each class in each others class so that they can "talk". Thanks in advance.

Code:

---

import java.util.Scanner;
public class CardGames
{
    private ShowGui gui;
    private PackOfCards cardPack;
    //private CardDisplay display;
    private Scanner scan;
    private Card card;
    private Card cardTwo;
    private int winCounter;

    public CardGames(ShowGui guiInstance)
    {
        this.gui = guiInstance;
        cardPack = new PackOfCards();
        scan = new Scanner(System.in);
        winCounter = 0;
    }

    public void higherOrLower()
    { 
        //Shuffle the pack.
        cardPack.shuffleCards(2000);
       
        //Prompt the user. See chart for Logic structure.
        while (true)
        {
            System.out.println("*********************************************");
            //Get the next card.
            cardTwo = cardPack.getNextCard();
           
            //Print the name of the first card.
            card = cardPack.getNextCard();
            System.out.println("The first card is:");
            System.out.println(card.getName());
            //display.displayCard(card);
            gui.displayCard(card);
            System.out.println("Higher or Lower?");
            int userInt = scan.nextInt();
            if (userInt == 0)
            {
                System.out.println("You selected Higher;");
                if (card.getValue() < cardTwo.getValue())
                {
                    System.out.println("Well done, the card was "+cardTwo.getName()+"");
                    winCounter++;
                }
                else
                {
                    System.out.println("Sorry, that is not correct.");
                    winCounter--;
                }
            }
           
            else if (userInt == 1)
            {
                System.out.println("You selected Lower;");
                if(card.getValue() > cardTwo.getValue())
                {
                    System.out.println("Well done, the card was "+cardTwo.getName()+"");
                    winCounter++;
                }
                else
                {
                    System.out.println("Sorry, that is not correct.");
                    winCounter--;
                }
            }
           
            else if (userInt == 2)
            {
                System.out.println("You have chosen to view your winnings.");
                if (winCounter <= 0)
                {
                    System.out.println("Sorry, your score is "+winCounter+". This does not qualify for a prize.");
                }
                else if (winCounter >=1 && winCounter <=3)
                {
                    System.out.println("You have won a Tier 1 prize. Your score is "+winCounter+"");
                }
                else if (winCounter >=4 && winCounter <=7)
                {
                    System.out.println("You have won a Tier 2 prize. Your score is "+winCounter+"");
                }
                else if (winCounter >=8)
                {
                    System.out.println("You have won a Tier 3 prize. Your score is "+winCounter+"");
                }
            }
           
            else
            {
                System.out.println("Please enter a valid option.");
            }
        }
    }
}

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Shameless bump here.

I am not sure that I explained myself thoroughly the first time, basically, at the moment, the while loop takes input from a Scanner, the integer that is entered into the scanner is placed in an int variable. There are then various if's and else if's that decide on the behaviour. What I need to do is somehow meet these different conditions with my JButtons. I am aware at the moment that it is an infinite loop, but I do have a menu item that invokes System.exit(0);.

Thanks a lot.
Sorry for the bump.