🚀 go-pugleaf

Last time I posted this it didn't seem to make it to the list so I'm
trying again...

I am attempting to create a non GUI class with a function the same as
Component.createImage(int width, int height). 

The image is created with a call like this 

        image = Toolkit.getDefaultToolkit().createImage(new
MyImageSource(width, height));

I am using a dummy MyImageSource even though I actually want an empty
width by height image. All seems well unless I try to get the image
'Graphics' with a call to image.getGraphics() which always generates a
class cast exception.

Do I need to perform some kind of image initialisation or preparation
before I can get the Graphics ? If so how ?

Any assistance much appreciated,

Karl Morteo