import javax.swing.Timer;
import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
public class Clock extends JPanel implements MouseListener, ActionListener
{
    private String message;
    private Timer ticker;
    private int hours, mins, secs;
    private Font font;
    public static final int SIZE = 50;
    public static final int WIDTH = 500;
    public static final int HEIGHT = 500;

    public void reset()
    {
        message ="";
        ticker.restart();
        repaint();
    }

    public Clock()  // constructor
    {
        font = new Font("Helvetica", Font.BOLD,  36);
        ticker = new Timer (1000,this);
        ticker.start();
        message = "";
        reset();
        setTime(8,30,0);
        addMouseListener(this);

    }

    public void updateTime()
    {
        secs++;
        if (secs>=60){
            secs=0;
            mins++;
        }
        if (mins>=60){
            mins=0;
            hours++;
        }
        if (hours>24)
            hours=0;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource()==ticker){
            updateTime();
            repaint();
        } else {//must have been another thing generating the event

        }

    }

    public void setTicker( Timer t)
    {
        ticker = t;
    }

    public void paintComponent(Graphics g)
    {
        setBackground(new Color(255,220,200) );
        super.paintComponent(g);

        g.setColor(Color.BLACK);
        g.drawString(message, 20, 20);
        g.setFont(font);
        g.drawString ( toString(), getWidth()/3, getHeight()/2);
    }

    public void setTime(int h, int m, int s)
    {
        hours=h;
        mins=m;
        secs=s;
    }

    public String toString()
    {
        String m = ""+mins;
        if (mins<10) 
            m="0"+m;
        String s = ""+secs;
        if (secs<10) 
            s="0"+s;
        
        return hours+":"+m+":"+s;
    }

    public static void main(String[] args)
    {
        JFrame window = new JFrame();
        window.setSize(WIDTH, HEIGHT);
        Container c = window.getContentPane();
        c.add(new Clock());

        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
    }

    public void mouseReleased(MouseEvent e) 
    {
        int x = e.getX();
        int y = e.getY();
        setTime(0,0,0);
        repaint();
    }

    public void mousePressed(MouseEvent e) { }

    public void mouseEntered(MouseEvent e) { }

    public void mouseExited(MouseEvent e) { }

    public void mouseClicked(MouseEvent e) { }
}