Re: Bug in ImageIO PNG support

From:
"<<<Klu>>>" <klu@montenegro.usfa.edu>
Newsgroups:
comp.lang.java.gui
Date:
Sat, 27 Jun 2009 00:37:51 -0400
Message-ID:
<h247oq$toj$1@aioe.org>
<<<Klu>>> wrote:

No, whatever's going wrong is going wrong inside ImageIO.read. It can't
even be that read is convolving in some way that write is deconvolving.
Not with a scale transform in between, and the write to a .jpg instead
of a .png.


This code reproduces it on my system:

package zzzbugfind2;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;

public class Main {
     public static void main(String[] args) throws Exception {
         SwingUtilities.invokeAndWait(new Runnable() {
             public void run() {
                 try {
                     BufferedImage bi = ImageIO.read(new URL("http:" +
                             "//libpng.org/pub/png/img_png/" +
                             "pnglogo-blk.png"));
                     JFrame frame = new JFrame();
                     frame.getContentPane().add(new
                             JLabel(new ImageIcon(bi)));
                     frame.pack();
                     frame.setVisible(true);
                 } catch (IOException e) {
                     // Ignore.
                 }
             }
         });
     }
}

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