Set color for drawing in Java

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
//from w  w w  .  j  ava  2  s  .c om
import javax.swing.JComponent;
import javax.swing.JFrame;

class MyCanvas extends JComponent {
  public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    g2d.setColor(Color.red);

    g2d.fill(new Rectangle(20,20,200,200));
    int red = 230;
    int green = 45;
    int blue = 67;
    g2d.setColor(new Color(red, green, blue));
    g2d.fill(new Rectangle(40,40,200,200));

  }
}

public class Main {
  public static void main(String[] a) {
    JFrame window = new JFrame();
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setBounds(30, 30, 450, 450);
    window.getContentPane().add(new MyCanvas());
    window.setVisible(true);
  }
}