رسم دائره

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

/** Drawing example. **/
public class SimpleDraw2Applet extends JApplet
{
  public void init () {
	Container content_pane = getContentPane ();

	Math.random ();

	// Get the drawing area of the applet
	int dY = getSize ().height;
	int dX = getSize ().width;

	// Create a random number of circles up to 3
	int numCircles =  (int) (2.0 * Math.random () + 1.0);

	// Create a circle array
	Circle [] circs = new Circle[numCircles];

	// Now create the circle instances
	for (int i=0; i < numCircles; i++) {
		circs = new Circle (dX,dY);
	}

	// Create an instance of DrawingPanel
	DrawingPanel drawing_panel = new DrawingPanel (circs);

	// Add the DrawingPanel to the contentPane.
	content_pane.add (drawing_panel);

  } // init

} // class SimpleDraw2Applet
class DrawingPanel extends JPanel
{
  Circle [] fCircles;
  int fNumCircles;

  DrawingPanel  (Circle [] circles) {
	fCircles = circles;
	fNumCircles = circles.length;
  } // ctor

  public void paintComponent (Graphics g) {
	// First paint background
	super.paintComponent (g);

	// Add your drawing instructions here
	g.setColor (Color.red);

	// Draw the circles
	for ( int i=0; i < fNumCircles; i++){
	  g.fillOval (fCircles.fX,fCircles.fY,
				  fCircles.fDx,fCircles.fDy);
	}

  } // paintComponent

} // class DrawingPanel
/** Circle class definition. **/
class Circle
{
  // These attributes provide the position &
  // dimensions of the circle and a box that
  // bounds it.
  int fCenterX,fCenterY;
  int fRadius;
  int fX,fY;
  int fDx,fDy;

  // Use constructor to
  Circle (int x_axis_width, int y_axis_height) {
	// Fix circles at 20% of horizontal axis
	fRadius = (int) (0.1 * x_axis_width);

	// choose random center location
	fCenterX = (int) ((x_axis_width) * Math.random ());
	fCenterY = (int) ((y_axis_height) * Math.random ());

	// Now calculate the bounding rectangle
	fX = fCenterX - fRadius;
	fY = fCenterY - fRadius;

	fDx = 2 * fRadius;
	fDy = 2 * fRadius;

	// Move away from edges.
	if (fX < 0) {
		fX = -fX;
		fCenterX += 2 * fX;
	} else if ((fX+fDx) > x_axis_width) {
		fX -= 2 * fDx;
		fCenterX -= 2 * fDx;
	} if (fY < 0) {
		fY = -fY;
		fCenterY += 2 * fY;
	} else if ((fY+fDy) > y_axis_height) {
		fY -= 2 * fDy;
		fCenterY -= 2 * fDy;
	}
  } // ctor
} // class Circle

thhaaaaaaaanx

بس انا ابيها فاضيه مش ملونه

وشكرا