Copying an Image in Memory

hello,
How to copy an image from memory so that it can be restored later.
For example:
private Image buffered_image, SavedImage;
private Graphics gbuf;
buffered_image = createImage(tWidth, tHeight);
gbuf = buffered_image.getGraphics();
How?
//Want to copy buffered_image to SavedImage
later restore SavedImage to buffered_image
Thank you

If you know the two LINES of code, please post it instead of sending me a URL. thank you

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