Rendering a Java Component to an image file

Question

Possible Duplicate:
Java Swing : Obtain Image of JFrame

How do you save what a Java GUI Component displays to an image file?

E.g. rendering a JPanel as a PNG.

score 5 · Accepted Answer · edited Jul 18 '11 at 23:08

5

JPanel panel = ...
...
...
File yourFileHere = ...
...
...
BufferedImage img = new BufferedImage(panel.getWidth(), panel.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics g = img.getGraphics();
panel.paint(g);
g.dispose();

try{
    ImageIO.write(img, "png", yourFileHere);
}catch(IOException e){
    e.printStackTrace();
}

edited Jul 18 '11 at 23:08

Andrew Thompson

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answered Jul 18 '11 at 17:22

Jeffrey

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Note that `BufferedImage.TYPE_INT_ARGB` would only make sense if the GUI components had transparency. – Andrew Thompson Jul 18 '11 at 23:10

score 1 · Answer 2 · edited May 23 '17 at 12:07

1

that would be descibed and with excelent examples here by @Andrew Thompson, but you can learn more than that by reading 2D Graphics and examples for that here

edited May 23 '17 at 12:07

Community

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answered Jul 18 '11 at 16:49

mKorbel

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Rendering a Java Component to an image file

2 Answers2