Drawing a nice circle in Java

Question

I\'m using Java Graphics and I keep getting \"ugly\" circles.

Here\'s what my Java program makes

Answer 1

I used drawPolygon method to draw circle by generating array of most of the points on circumference of circle with proposed radius. Code:

           import java.awt.*;
           import java.applet.*;

            /*
                 */

          public class OnlyCircle extends Applet{

            public void paint(Graphics g){


              int r=200;//radius
              int x1=250;//center x coordinate
              int y1=250;//center y coordinate
              double x2,y2;
              double a=0;
              double pi=3.14159;
              int count=0; 
              int i=0;
              int f=0;
              int[] x22=new int[628319];
              int[] y22=new int[628319];

             while(a<=2*pi&&i<628319&&f<628319)
                  {
                   double k=Math.cos(a);
                   double l=Math.sin(a);
                     x2=x1+r*k;
                     y2=y1+r*l;
                  x22[i]=(int)x2;
                  y22[f]=(int)y2;
                   i++;
                   f++;
                   a+=0.00001;
                  }
               int length=x22.length;
               g.drawPolygon(x22,y22,length);
                 }
               }