import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Rectangles extends JPanel {
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(new Color(212, 212, 212));
g2d.drawRect(10, 15, 90, 60);
g2d.setColor(new Color(31, 21, 1));
g2d.fillRect(250, 195, 90, 60);
}
public static void main(String[] args) {
Rectangles rects = new Rectangles();
JFrame frame = new JFrame("Rectangles");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(rects);
frame.setSize(360, 300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}