import java.util.*;
import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;

public class Clock03 {
	private JFrame frame = new JFrame("•`‰æ");
	private JPanel pane = (JPanel)frame.getContentPane();
	private Canvas canvas = new Canvas(){
		@Override
		public void update(Graphics g){
			paint(g);
		}
		@Override
		public void paint(Graphics g){
			Image img = createImage(400, 400);
			Graphics2D g2 = (Graphics2D)img.getGraphics();
			AffineTransform af = new AffineTransform();
			for(int i = 0; i < 12; i++){
				af.setToRotation(Math.PI / 6 * i, 200, 200);
				g2.setTransform(af);
				g2.fillOval(198, 0, 4, 20);
			}

			Calendar cal = Calendar.getInstance();

			double sec = Math.PI / 30 * cal.get(Calendar.SECOND);
			af.setToRotation(sec, 200, 200);
			g2.setTransform(af);
			g2.setColor(Color.BLUE);
			g2.fillOval(198, 0, 4, 200);

			double min = Math.PI / 30 * cal.get(Calendar.MINUTE);
			af.setToRotation(min, 200, 200);
			g2.setTransform(af);
			g2.setColor(Color.GREEN);
			g2.fillOval(195, 24, 10, 176);

			double hour = Math.PI / 6 * cal.get(Calendar.HOUR) + min / 12;
			af.setToRotation(hour, 200, 200);
			g2.setTransform(af);
			g2.setColor(Color.RED);
			g2.fillOval(192, 100, 16, 100);
			
			g.drawImage(img, 0, 0, this);
			try{Thread.sleep(50);}catch(Exception ex){}
			repaint();
		}
	};
	
	public Clock03(){
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		canvas.setBackground(Color.LIGHT_GRAY);
		canvas.setSize(400, 400);
		pane.add(canvas);
		frame.pack();
		frame.setVisible(true);
	}
	
	public static void main(String[] args) {
		new Clock03();
	}
}