Convert JPanel to image

java image swing jpanel
Jeff Storey picture Jeff Storey · Aug 28, 2009 · Viewed 28.9k times · Source

Is there a way to convert a JPanel (that has not yet been displayed) to a BufferedImage?

thanks,

Jeff

Answer

Tom picture Tom · Aug 28, 2009

From the BufferedImage you can create a graphics object, which you can use to call paint on the JPanel, something like:

public BufferedImage createImage(JPanel panel) {

    int w = panel.getWidth();
    int h = panel.getHeight();
    BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = bi.createGraphics();
    panel.paint(g);
    g.dispose();
    return bi;
}

You may need to make sure you set the size of the panel first.

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