create a favicon.icon file with coldfusion

CreateFavIcon.cfm

<cffunction name="createFavicon" access="public" returntype="void">
    <cfargument name="letter" type="string" required="true">
    <cfargument name="saveLocation" type="string" required="true">

    <!--- Set image dimensions (16x16 pixels) --->
    <cfset width = 16>
    <cfset height = 16>
    
    <!--- Create a buffered image with transparency --->
    <cfset BufferedImage = createObject("java", "java.awt.image.BufferedImage")>
    <cfset image = BufferedImage.init(width, height, BufferedImage.TYPE_INT_ARGB)>
    
    <!--- Get the Graphics2D object to draw on the image --->
    <cfset Graphics2D = createObject("java", "java.awt.Graphics2D")>
    <cfset g2d = image.createGraphics()>
    
    <!--- Enable anti-aliasing for smoother text rendering --->
    <cfset RenderingHints = createObject("java", "java.awt.RenderingHints")>
    <cfset g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)>
    
    <!--- Enable text anti-aliasing for even smoother text rendering --->
    <cfset g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON)>
    
    <!--- Set background color --->
    <cfset Color = createObject("java", "java.awt.Color")>
    <cfset backgroundColor = Color.decode("##00BBF2")>
    <cfset g2d.setColor(backgroundColor)>
    <cfset g2d.fillRoundRect(0, 0, width, height, 4, 4)>
    
    <!--- Set font and color --->
    <cfset Font = createObject("java", "java.awt.Font")>
    <cfset font = Font.init("Arial", Font.BOLD, 15)>
    <cfset g2d.setFont(font)>
    <cfset g2d.setColor(Color.white)>
    
    <!--- Calculate the position for center-aligned text --->
    <cfset fontMetrics = g2d.getFontMetrics()>
    <cfset stringWidth = fontMetrics.stringWidth(arguments.letter)>
    <cfset stringHeight = fontMetrics.getAscent() - fontMetrics.getDescent()>
    <cfset x = (width - stringWidth) / 2>
    <cfset y = (height + stringHeight) / 2>
    
    <!--- Draw the input letter onto the image --->
    <cfset g2d.drawString(arguments.letter, x, y)>
    
    <!--- Dispose the graphics context and release resources --->
    <cfset g2d.dispose()>
    
    <!--- Save the image as .ico file --->
    <cfset File = createObject("java", "java.io.File")>
    <cfset ImageIO = createObject("java", "javax.imageio.ImageIO")>
    <cfset icoFile = File.init(arguments.saveLocation)>
    <cfset ImageIO.write(image, "png", icoFile)>
</cffunction>

<cfset createFavicon("M", "D:\iis\....\favicon.ico")>