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Re: Image Displayer

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  To: comp.lang.java.programmer
In article 
<76f67313-1255-4056-b072-8dc634fa0c42@c65g2000hsa.googlegroups.com>,
 Chase Preuninger <chasepreuninger@gmail.com> wrote:

> I want to figure out how to read a JPG file by just using the read
> method in the InputStream class then I want to create a GUI component
> that can display it.
> 
> 1) How are the bytes formatted in a JPG file?
> 2) What is the best way to color individual pixels in a JComponent.
> 
> [elided]

Just to get started, use one of the ImageIO.read() methods to get your 
image into a BufferedImage. Then call getRaster() and have fun with the 
raster's numerous setXXX methods. Then override paintComponent() in 
whatever Component you extend:

protected void paintComponent(Graphics g) {
    g.drawImage(bufferedImage, 0, 0, this);
}

John
-- 
John B. Matthews
trashgod at gmail dot com
home dot woh dot rr dot com slash jbmatthews

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Re: Image Displayer "John B. Matthews" <john.b..matthews@THRWHITE.remove-dii-this> - 2011-04-27 15:45 +0000

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