Image Thumbnail creation issue

Question

Hi,
I am trying to create thumbnail images using jre 1.4, WAS 5.1 in unix. The problem is that some of the thumbnail images are not being created. When i checked the image directory i found that these images are having size 0! But after say 5-10 minutes the size becomes original and we are able to see the images. We dont have this issue in windows environment. We have set the graphics environment correctly in the unix server. Can anyone shed some light on this?
Here's the code i am using...
String srcFile = (String) iter.next();
Image srcImg = new ImageIcon(IMG_DIR + srcFile).getImage();
int srcWidth = srcImg.getWidth(null);
int srcHeight = srcImg.getHeight(null);
float scale = 1.0f * srcHeight / 50;//*1.0 to prevent lose precision
int width = (int) (srcWidth / scale);
ImageFilter filter = new ReplicateScaleFilter(width, 50);
ImageProducer producer = new FilteredImageSource(srcImg.getSource(), filter);
Image resizedImg = Toolkit.getDefaultToolkit().createImage(producer);
BufferedImage bufImg = toBufferedImage(resizedImg);
String tbnlFn = IMG_DIR + ImageUtil.getTbnlFileNm(srcFile);
fos = new FileOutputStream(tbnlFn);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(fos);
encoder.encode(bufImg);
fos.flush();//ensure we flush all buffer to disk;
and the toBufferedImage() function...
private static BufferedImage toBufferedImage(Image image)
     image = new ImageIcon(image).getImage();
     BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
     Graphics g = bufferedImage.createGraphics();
     g.setColor(Color.white);
     g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
     g.drawImage(image, 0, 0, null);
     g.dispose();
     return bufferedImage;
}

Answer 1

Hi,
I am trying to create thumbnail images using jre 1.4, WAS 5.1 in unix. The problem is that some of the thumbnail images are not being created. When i checked the image directory i found that these images are having size 0! But after say 5-10 minutes the size becomes original and we are able to see the images. We dont have this issue in windows environment. We have set the graphics environment correctly in the unix server. Can anyone shed some light on this?
Here's the code i am using...
String srcFile = (String) iter.next();
Image srcImg = new ImageIcon(IMG_DIR + srcFile).getImage();
int srcWidth = srcImg.getWidth(null);
int srcHeight = srcImg.getHeight(null);
float scale = 1.0f * srcHeight / 50;//*1.0 to prevent lose precision
int width = (int) (srcWidth / scale);
ImageFilter filter = new ReplicateScaleFilter(width, 50);
ImageProducer producer = new FilteredImageSource(srcImg.getSource(), filter);
Image resizedImg = Toolkit.getDefaultToolkit().createImage(producer);
BufferedImage bufImg = toBufferedImage(resizedImg);
String tbnlFn = IMG_DIR + ImageUtil.getTbnlFileNm(srcFile);
fos = new FileOutputStream(tbnlFn);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(fos);
encoder.encode(bufImg);
fos.flush();//ensure we flush all buffer to disk;
and the toBufferedImage() function...
private static BufferedImage toBufferedImage(Image image)
     image = new ImageIcon(image).getImage();
     BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB);
     Graphics g = bufferedImage.createGraphics();
     g.setColor(Color.white);
     g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
     g.drawImage(image, 0, 0, null);
     g.dispose();
     return bufferedImage;
}