Prob: Creating Image in memory and printing "hello" on it, then saving it.

How can i create an Image instance in memory and then do a drawString "Hello" on it, then save it to disk.
I'm not loading the image, i'm not displaying it onscreen.... It's all in memory. So i can't to createImage, like in an applet... or Window.createImage...
I need to create a new image with a width and height, and then save that to disk. I have the save part, how about the create part :(
Thanks a million

import java.awt.image.BufferedImage;
import java.awt.Graphics2D;
BufferedImage img=new BufferedImage(width,height,BufferedImage.TYPE_3BYTE_BGR);
Graphics2D gfx=img.createGraphics();
gfx.drawString("Hello World",x,y);- Marcus

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