import java.awt.*;
import javax.swing.*;
import java.util.Calendar;
import java.text.DecimalFormat;

public class CalendarIconExample extends JComponent {
  int SIZE = 60;
  Dimension dim = new Dimension(SIZE, SIZE);
  int nx, ny, width = 38, height = 38;
  Calendar cal;
  Font dateFont, dayFont, monthFont;
  FontMetrics date, day, month ;
  boolean showTime = true;
  String[] days ={"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"};
  String[] months={"JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL",
      "AUG", "SEP", "OCT", "NOV", "DEC", };

  public CalendarIconExample(boolean show) {
    this(Calendar.getInstance(), show);
  }
  public CalendarIconExample(Calendar c, boolean show) {
    super();
    cal = c;
    ny = 5;
    nx = 10;
    dateFont = new Font("Serif", Font.BOLD, 18);
    date = getFontMetrics(dateFont);
    dayFont = new Font("Book Antiqua", Font.BOLD, 10);
    day = getFontMetrics(dayFont);
    monthFont = new Font("Book Antiqua", Font.BOLD, 10);
    month = getFontMetrics(monthFont);
  }
  public void paint(Graphics graphics) {
   paintIcon(this, graphics, 0, 0);
  }
  public void paintIcon(Component component, Graphics g,
       int x, int y) {
    g.drawRect(x, y, dim.width - 2, dim.height - 2);
    g.setColor(Color.gray);
    g.fillRect(x + nx + 3, y + ny + 3, width, height);
    g.setColor(Color.white);
    g.fillRect(x + nx, y + ny, width, height);
  g.setColor(Color.black);
  if (showTime)
     super.paint(g);
 
    String st = days[cal.get(Calendar.DAY_OF_WEEK) - 1];
    g.setFont(dayFont);
  g.setColor(Color.red);
    int w = day.stringWidth(st);
    g.drawString(st, x + nx + ((width - w) / 2), y + ny + 10);

    st = Integer.toString(cal.get(Calendar.DAY_OF_MONTH));
    g.setFont(dateFont);
  g.setColor(Color.black);
    w = date.stringWidth(st);
    g.drawString(st, x + nx + ((width - w) / 2), y + ny + 25);

    st = months[cal.get(Calendar.MONTH)];
    g.setFont(monthFont);
  g.setColor(Color.red);
    w = month.stringWidth(st);
    g.drawString(st, x + nx + ((width - w) / 2), y + ny + 35);
}
   public static void main(String[] args) {
    JFrame frame = new JFrame("Calendar");
    Container container= frame.getContentPane();
    CalendarIconExample iconExample = new CalendarIconExample(true);
    container.add(iconExample);
    frame.setSize(100, 100);
    frame.show();
  }
}