How do you make java components paint to an image?

I tried having a JPanel as one of my instance variables inside my class.
In the paint method i called paint on the JPanel and passed in a graphics2D object created from an image.
But JPanel does not paint on my image. How do I make it do that?
Basically I want to do some effects on text, but do not want to be bothered about text layout. So I want my JLabel to paint its output on an image and then I can do the effects with the image.
Thanks,

Create an image, get it graphics and call the paint method of the label.
Graphics g = image.getGraphics();
label.paint(g);
The label must be added to a container and visible.

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