Java tutorial
import java.awt.Color; import java.awt.Graphics; import javax.swing.JComponent; import javax.swing.JFrame; class MyCanvas extends JComponent { public void paint(Graphics g) { g.setColor(Color.RED); g.fillArc(20, 20, 200, 200, 200, 200); } } public class FillArc { public static void main(String[] a) { JFrame window = new JFrame(); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); window.setBounds(30, 30, 300, 300); window.getContentPane().add(new MyCanvas()); window.setVisible(true); } }