Java tutorial
import java.awt.BasicStroke; import java.awt.Color; import java.awt.Graphics2D; import java.awt.geom.Ellipse2D; import java.awt.image.BufferedImage; import java.io.File; import javax.imageio.ImageIO; public class Main { static public void main(String args[]) throws Exception { int width = 200, height = 200; BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D ig2 = bi.createGraphics(); ig2.fillRect(0, 0, width - 1, height - 1); BasicStroke stroke = new BasicStroke(10, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND); ig2.setPaint(Color.lightGray); ig2.setStroke(stroke); ig2.draw(new Ellipse2D.Double(0, 0, 100, 100)); ImageIO.write(bi, "GIF", new File("a.gif")); } }