Save Component(containing jpeg and JLabels) as JPEG? Is there a package for this?

[Matt Wilcko]

Is it possible to save a Component(containing jpeg and JLabels) as a JPEG? Has anyone seen a package out there that allows this by simply passing the component?

[Joe Ess]

Given a Component "this", one can create an image and write it to file by:

 
BufferedImage bi = (BufferedImage) this.createImage(this.getWidth(), this.getHeight());
Graphics2D g = bi.createGraphics();
this.printAll(g);
fos = new FileOutputStream("test.jpg");
JPEGImageEncoder enc = JPEGCodec.createJPEGEncoder(fos) ;
enc.encode(bi);
fos.flush();
fos.close();
 

[Matt Wilcko]

Thanks Joe!
One more question, any idea if I can specify dpi? Ideally the image would be 300 dpi for high quality printing.

[Joe Ess]

Why didn't you just post a new topic with a link to your
previous question

[Brian Pipa]

I tied this a few years ago and could find NO way to get anything more than 72 DPI. I was using an image then using a PDF converison library to convert it to PDF. The output looked awful because it was 72 DPI. I gave up on the PDF/JPEG output. If anyone does know a way to make it greater than 72 DPI, I would be interested to hear it also.
brian

[Matt Wilcko]

Would it be possible to create a component that is larger than screen size(2000 x 1500 for example) and then make a jpeg from that with the method above?
It wouldnt be 300 dpi, but an image that large could be converted to a 6.5" x 3" 300 dpi image. Basically the same as a digital camera, a high rez 72 dpi image.
Just have the user work on a low rez version on-screen and then from that create the very large component and save it to jpeg.
Will this even work? Im just thinking out loud.