Rectangle.add(Point pt) has the following syntax.
public void add(Point pt)
In the following code shows how to use Rectangle.add(Point pt) method.
//from w ww.ja v a 2 s.co m import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.Rectangle; import javax.swing.JFrame; import javax.swing.JPanel; public class Main extends JPanel { public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; Rectangle r = new Rectangle (10,10,50,40); r.add(new Point(40, 40)); g2.fill (r); } public static void main(String[] args) { JFrame frame = new JFrame(); frame.getContentPane().add(new Main()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200, 200); frame.setVisible(true); } }