Java tutorial
import java.awt.Graphics; import java.awt.Polygon; import javax.swing.JFrame; import javax.swing.JPanel; public class Main extends JPanel { public void paint(Graphics g) { super.paintComponent(g); int radius = 40; int centerX = 50; int centerY = 100; Polygon p = new Polygon(); centerX = 150; for (int i = 0; i < 5; i++) p.addPoint((int) (centerX + radius * Math.cos(i * 2 * Math.PI / 5)), (int) (centerY + radius * Math.sin(i * 2 * Math.PI / 5))); g.fillPolygon(p); } public static void main(String[] args) { JFrame frame = new JFrame(); frame.add(new Main()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setBounds(20, 20, 500, 500); frame.setVisible(true); } }