Hello everyone,

I'm pretty new to Java and am having some issues with what is probably a very simple problem. I have written the following program that displays a 10x10 color matrix of squares whose colors are randomly generated and are randomly changed upon being clicked by a user in the window. However, if I wanted to change these squares to rectangles, for example, or any other shape how might I go about doing that? Thanks for any help! :)

import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class ColorGrid extends JLabel {

private static final int n = 10;
private static final Random random = new Random();

public ColorGrid() {
this.setBackground(new Color(random.nextInt()));
this.setPreferredSize(new Dimension(50, 50));

private void GridOutput() {
JFrame f = new JFrame("ColorGrid Display Window");
f.setLayout(new GridLayout(n, n));
for (int i = 0; i < n * n; i++) {
final ColorGrid label = new ColorGrid();
label.addMouseListener(new MouseAdapter() {

public void mousePressed(MouseEvent e) {
label.setBackground(new Color(random.nextInt()));

public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {

public void run() {
new ColorGrid().GridOutput();