clocksystem2.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Date;

public class clocksystem2 extends JFrame
{
    private JLabel heading;

    private JLabel clockLabel;

    private Font font=new Font("",Font.BOLD,35);


    clocksystem2()
    {
        super.setTitle(" My Clock");
        super.setSize(400,400);
        super.setLocation(300,50);
        this.createGUI();
        this.startClock();
        super.setVisible(true);
    }

    public void createGUI(){
        heading=new JLabel("My Clock");
        clockLabel=new JLabel("clock");
        heading.setFont(font);
        clockLabel.setFont(font);

        this.setLayout(new GridLayout(2,1));

        this.add(heading);

        this.add(clockLabel);


    }
    public void startClock()
    {
        Timer timer=new Timer(1000, new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent e) {
//                String dateTime=new Date().toString();
//                String dateTime=new Date().toLocaleString(); // for your local time
                Date d=new Date();
                SimpleDateFormat sdf=new SimpleDateFormat(" y :: M :: hh: mm: ss :: a"); // for your format
                String dateTime=sdf.format(d);
                clockLabel.setText(dateTime);


            }
        });
        timer.start();
    }


}