Java Rectangle(Dimension d) Constructor

public Rectangle(Dimension d)

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
//from w w  w.j  a  va 2 s. c  o  m
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 (new Dimension(10,10));    
    
    g2.fill (r);
    System.out.println (r.isEmpty());
  }

  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);
  }
}