Java tutorial
import java.awt.Color; import java.awt.Container; import java.awt.Graphics; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JFrame; import javax.swing.JPanel; public class DrawRectPanel extends JPanel { public void paintComponent(Graphics g) { super.paintComponent(g); g.setColor(Color.blue); g.drawRect(10, 10, 80, 30); g.drawRoundRect(100, 10, 80, 30, 15, 15); int thickness = 4; for (int i = 0; i <= thickness; i++) g.draw3DRect(200 - i, 10 - i, 80 + 2 * i, 30 + 2 * i, true); for (int i = 0; i < thickness; i++) g.draw3DRect(200 - i, 50 - i, 80 + 2 * i, 30 + 2 * i, false); g.drawOval(10, 100, 80, 30); } public static void main(String[] args) { JFrame frame = new JFrame(); frame.setTitle("DrawRect"); frame.setSize(300, 200); frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); Container contentPane = frame.getContentPane(); contentPane.add(new DrawRectPanel()); frame.show(); } }