Draw pixel 2

Draw pixel 2 is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Task

Create a window and draw a pixel in it, subject to the following:

1.  the window is 640 x 480
2.  the color of the pixel must be yellow (255,255,0)
3.  the position of the pixel is random

Kotlin

This is a variation of the Draw a pixel task and so therefore is the code to accomplish it. <lang scala>// Version 1.2.41

import java.awt.Color import java.awt.Graphics import java.awt.image.BufferedImage import java.util.Random

class BasicBitmapStorage(width: Int, height: Int) {

   val image = BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR)

   fun fill(c: Color) {
       val g = image.graphics
       g.color = c
       g.fillRect(0, 0, image.width, image.height)
   }

   fun setPixel(x: Int, y: Int, c: Color) = image.setRGB(x, y, c.getRGB())

   fun getPixel(x: Int, y: Int) = Color(image.getRGB(x, y))

}

fun main(args: Array<String>) {

   val rand = Random()
   val bbs = BasicBitmapStorage(640, 480)
   with (bbs) {
       fill(Color.white) // say
       val x = rand.nextInt(image.width)
       val y = rand.nextInt(image.height)
       setPixel(x, y, Color.yellow)
       // check there's exactly one random yellow pixel
       for (i in 0 until image.width) {
           for (j in 0 until image.height) {
               if (getPixel(i, j) == Color.yellow) {
                   println("The color of the pixel at ($i, $j) is yellow")
               }
           }
       }
   }

}</lang>

Output:

Sample output:

The color of the pixel at (296, 15) is yellow