import java.awt.*;

import javax.swing.*;

import java.util.*;



public class StillClock extends JPanel {

  private int hour;

  private int minute;

  private int second;



  /** Construct a default clock with the current time*/

  public StillClock() {

    setCurrentTime();

  }



  /** Construct a clock with specified hour, minute, and second */

  public StillClock(int hour, int minute, int second) {

    this.hour = hour;

    this.minute = minute;

    this.second = second;

  }



  /** Return hour */

  public int getHour() {

    return hour;

  }



  /** Set a new hour */

  public void setHour(int hour) {

    this.hour = hour;

    repaint();

  }



  /** Return minute */

  public int getMinute() {

    return minute;

  }



  /** Set a new minute */

  public void setMinute(int minute) {

    this.minute = minute;

    repaint();

  }



  /** Return second */

  public int getSecond() {

    return second;

  }



  /** Set a new second */

  public void setSecond(int second) {

    this.second = second;

    repaint();

  }



  /** Draw the clock */

  protected void paintComponent(Graphics g) {

    super.paintComponent(g);



    // Initialize clock parameters
    int clockRadius =

      (int)(Math.min(getWidth(), getHeight()) * 0.8 * 0.5);

    int xCenter = getWidth() / 2;

    int yCenter = getHeight() / 2;



    // Draw circle
    g.setColor(Color.black);

    g.drawOval(xCenter - clockRadius, yCenter - clockRadius,

      2 * clockRadius, 2 * clockRadius);

    g.drawString("12", xCenter - 5, yCenter - clockRadius + 12);

    g.drawString("9", xCenter - clockRadius + 3, yCenter + 5);

    g.drawString("3", xCenter + clockRadius - 10, yCenter + 3);

    g.drawString("6", xCenter - 3, yCenter + clockRadius - 3);



    // Draw second hand
    int sLength = (int)(clockRadius * 0.8);

    int xSecond = (int)(xCenter + sLength *

      Math.sin(second * (2 * Math.PI / 60)));

    int ySecond = (int)(yCenter - sLength *

      Math.cos(second * (2 * Math.PI / 60)));

    g.setColor(Color.red);

    g.drawLine(xCenter, yCenter, xSecond, ySecond);



    // Draw minute hand
    int mLength = (int)(clockRadius * 0.65);

    int xMinute = (int)(xCenter + mLength *

      Math.sin(minute * (2 * Math.PI / 60)));

    int yMinute = (int)(yCenter - mLength *

      Math.cos(minute * (2 * Math.PI / 60)));

    g.setColor(Color.blue);

    g.drawLine(xCenter, yCenter, xMinute, yMinute);



    // Draw hour hand
    int hLength = (int)(clockRadius * 0.5);

    int xHour = (int)(xCenter + hLength *

      Math.sin((hour % 12 + minute / 60.0) * (2 * Math.PI / 12)));

    int yHour = (int)(yCenter - hLength *

      Math.cos((hour % 12 + minute / 60.0) * (2 * Math.PI / 12)));

    g.setColor(Color.green);

    g.drawLine(xCenter, yCenter, xHour, yHour);

  }



  public void setCurrentTime() {

    // Construct a calendar for the current date and time
    Calendar calendar = new GregorianCalendar();



    // Set current hour, minute and second
    this.hour = calendar.get(Calendar.HOUR_OF_DAY);

    this.minute = calendar.get(Calendar.MINUTE);

    this.second = calendar.get(Calendar.SECOND);

  }



  public Dimension getPreferredSize() {

    return new Dimension(200, 200);

  }

}