Combine Prime Factor Code into JPanel

I have a working JFrame GUI with my JPanel all setup. I am trying to combine two different codes that I've got setup and working. The first code was a text converter toUpperCase in a JPanel, and the second is a Prime Factor (not prime numbers) code. I've been trying to get the JPanel to give an output of Prime Factors for any number that a user inputs. Here is what I have....

Code :

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public class Prime extends JPanel { 
    private JLabel formattedText;
 
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.getContentPane().add(new Prime());
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        frame.setVisible(true);
    }
 
    public Prime(){
        setLayout(new BoxLayout(this,BoxLayout.Y_AXIS));
        JPanel panel = new JPanel(); panel.setPreferredSize(new Dimension(640,100));
        JLabel label = new JLabel("Enter a number to check for it's prime number(s).");
        JTextField field = new JTextField("0");
        field.addActionListener(new FieldListener());
        add(label);
        add(field);
        add(panel);
 
 
        panel = new JPanel(); panel.setPreferredSize(new Dimension(640,380));
        formattedText = new JLabel();
        panel.add(formattedText);
        add(panel);
    }
 
    private class FieldListener implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            JTextField field = (JTextField)event.getSource();
                formattedText.setText(field.getText().toUpperCase()); // I know this is wrong... I can't figure out what to change here to get it to pull the code below.
            }
    }
    public class PrimeFactors {
 
    }
}

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and here is the Prime Factor code

Code :

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public class Temp {
 
    static int primeCheck = 1;
 
    public static void main(String[] args) {
        System.out.println("Enter a number whose Prime factors are desired: ");
        Scanner numS = new Scanner(System.in);
        int numPriFac = 0;
        if (numS.hasNextInt()) {
            numPriFac = numS.nextInt();
        }
 
        System.out.println("All the Prime Factors of the entered number are:");
 
        for (int tap = 1; tap <= numPriFac; tap++) {
            if (numPriFac % tap == 0) {
                for (int primeTest = 2; primeTest < tap; primeTest++) {
                    if (tap % primeTest == 0) {
                        primeCheck = 1;
                        break;
                    } else {
                        primeCheck = 0;
                    }
                }
                if (primeCheck == 0 || tap == 2) {
                    System.out.print(tap + " ");
                }
            }
        }
    }
}

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That last PrimeFactors code in the bottom is just something left over from when I was trying to get it working on my own. Thanks so much for any help!!!

Quote:

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JPanel to give an output of Prime Factors for any number

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Not sure what a JPanel has to do with computing PFs.
Does the code correctly compute the numbers you want to see but there is some problem displaying them in the JPanel?
Or is the problem in the creation of the numbers (nothing to do with displaying them in a JPanel)?

The code for the GUI works and the code for the JPanel works, but I jwant to combine the two codes so that I can have a GUI for the user to input a number to have it's Prime Factors returned.

You could use a JTextField for receiving the user input.
You could use a JTextArea for displaying the computed numbers.