Digital Clock in Java

Digital Clock in Java

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import javax.swing.*;
import java.awt.*;
import java.text.SimpleDateFormat;
import java.util.Date;
 
public class DigitalClockApp extends JFrame {
    private JLabel timeLabel;
 
    public DigitalClockApp() {
        setTitle("Digital Clock");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(200, 100);
        setLocationRelativeTo(null);
 
        // Create the time label
        timeLabel = new JLabel();
        timeLabel.setFont(new Font("Arial", Font.BOLD, 24));
        timeLabel.setHorizontalAlignment(SwingConstants.CENTER);
        updateTime();
 
        // Set the time label as the content pane
        setContentPane(timeLabel);
 
        // Start a timer to update the time every second
        Timer timer = new Timer(1000, e -> updateTime());
        timer.start();
    }
 
    private void updateTime() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
        String time = dateFormat.format(new Date());
        timeLabel.setText(time);
    }
 
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            DigitalClockApp app = new DigitalClockApp();
            app.setVisible(true);
        });
    }
}