Как сделать gui таймер в java?

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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class TimerGUI {
    private int seconds = 0;
    private boolean isRunning = false;

    private JFrame frame;
    private JLabel timeLabel;

    public TimerGUI() {
        frame = new JFrame("Timer");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 200);
        frame.setLayout(new FlowLayout());

        timeLabel = new JLabel("0:00");
        timeLabel.setFont(new Font("Arial", Font.PLAIN, 50));

        JButton startButton = new JButton("Start");
        startButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                start();
            }
        });

        JButton stopButton = new JButton("Stop");
        stopButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                stop();
            }
        });

        JButton resetButton = new JButton("Reset");
        resetButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                reset();
            }
        });

        frame.add(timeLabel);
        frame.add(startButton);
        frame.add(stopButton);
        frame.add(resetButton);

        frame.setVisible(true);
    }

    public void start() {
        isRunning = true;

        Thread thread = new Thread(new Runnable() {
            public void run() {
                while (isRunning) {
                    try {
                        Thread.sleep(1000);
                        seconds++;
                        updateTimeLabel();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        });

        thread.start();
    }

    public void stop() {
        isRunning = false;
    }

    public void reset() {
        seconds = 0;
        updateTimeLabel();
    }

    public void updateTimeLabel() {
        int minutes = seconds / 60;
        int remainingSeconds = seconds % 60;

        timeLabel.setText(String.format("%d:%02d", minutes, remainingSeconds));
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new TimerGUI();
            }
        });
    }
}