Java tutorial
import java.awt.BasicStroke; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.geom.Ellipse2D; import javax.swing.JFrame; import javax.swing.JPanel; public class Overlap extends JPanel { public static void main(String[] args) { JFrame f = new JFrame(); f.getContentPane().add(new Overlap()); f.setSize(300, 200); f.setVisible(true); } public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; double x = 15, y = 50, w = 70, h = 70; Ellipse2D e = new Ellipse2D.Double(x, y, w, h); g2.setStroke(new BasicStroke(8)); Color smokeyColor = new Color(128, 128, 128, 128); g2.setPaint(smokeyColor); g2.fill(e); g2.draw(e); e.setFrame(x + 100, y, w, h); g2.setPaint(Color.black); g2.draw(e); g2.setPaint(Color.gray); g2.fill(e); e.setFrame(x + 200, y, w, h); g2.setPaint(Color.gray); g2.fill(e); g2.setPaint(Color.black); g2.draw(e); } }