Java tutorial
import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class Colors extends JPanel { public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; g2d.setColor(new Color(12, 16, 116)); g2d.fillRect(10, 15, 90, 60); g2d.setColor(new Color(42, 19, 31)); g2d.fillRect(130, 15, 90, 60); g2d.setColor(new Color(70, 7, 23)); g2d.fillRect(250, 15, 90, 60); g2d.setColor(new Color(10, 10, 84)); g2d.fillRect(10, 105, 90, 60); g2d.setColor(new Color(22, 21, 61)); g2d.fillRect(130, 105, 90, 60); g2d.setColor(new Color(21, 98, 69)); g2d.fillRect(250, 105, 90, 60); g2d.setColor(new Color(217, 146, 54)); g2d.fillRect(10, 195, 90, 60); g2d.setColor(new Color(63, 121, 186)); g2d.fillRect(130, 195, 90, 60); g2d.setColor(new Color(131, 121, 11)); g2d.fillRect(250, 195, 90, 60); } public static void main(String[] args) { JFrame frame = new JFrame("Colors"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(new Colors()); frame.setSize(360, 300); frame.setLocationRelativeTo(null); frame.setVisible(true); } }