Help!How can i draw an image that do not need to be displayed?

Question

I want to draw an image and save it as an jpeg file.
first I have to draw all the elements in an image object.I write a class inherit from Class Component,I want to use the method CreateImage,but I get null everytime.And i cannot use the method getGraphics of this object.Thus i can not draw the image.
when i use an applet,it runs ok.I use panel and frame,and it fails.
How can i draw an image without using applet,because my programme will be used on the server.
Thank you.

Answer 1

you could try this to create the hidden image
try
          GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
          GraphicsDevice gs = ge.getDefaultScreenDevice();
          GraphicsConfiguration gc = gs.getDefaultConfiguration();
          offImage = gc.createCompatibleImage(100, 100);
          offG = offImage.getGraphics();
      catch(Exception e)
          System.out.println(e.getMessage());
      }