Determining if a Java.awt.Rectangle contains a Java.awt.Color

Question

I was wondering how I would determine if a Java.awt.Rectangle contains a pixel that is a specific Java.awt.Color. I've been searching all over but I cannot find any information on this or if it's even possible.

So I was wondering how to determine if a Rectangle contains aa pixel with a specific Color or if a specific colored pixel is inside a defined Rectangle.

Example: The left image is a black rectangle. Lets say I have a defined Java.awt.Color that is red. I want to determine if that rectangle contains a pixel that is that color.

Answer 1

If you need to find out if some pixel on a Graphics was painted in this color, you can only discover it if the Graphics was created over a BufferedImage. So you could run the same code that draws on screen, say call a Component's paint(Graphics) method, passing to it the result of BufferedImage.createGraphics() call. Once painting is done, check pixel values in the range you need by calling BufferedImage.getRGB(x, y).