javax.imageio

At work we have some tomcat servers running several webapps, about half of which have to do some image processing. Before doing their image processing, these webapps do a ImageIO.scanForPlugins() to get the appropriate image readers and writers into memory. While before this was just run anytime an image needed to be processed, we now run the scan only when the webapps are initialized (since we don't add any jars after running, why run the scan more than once?) Some days later, the tomcat instance crashed due to an OutOfMemoryError . Luckily we had the HeapDumpOnOutOfMemoryError option set, so

Why does combining images where BG is a JPEG cause unexpected results? This is a follow-up to my answer in Overlaying of 2 images doesnt work properly . The source posted there (using a BG image created in memory) looks like this: The BG image is on the left. The FG image (a PNG with transparency) is in the middle. The combined image is on the right. So far, so good. But then the person who asked the question commented that if the BG was a JPEG, it failed. Thinking they were mistaken, I altered my example to encode the BG image to a JPEG. Now if I use BufferedImage.TYPE_INT_ARGB or

Below you will see a picture of beatiful pastry called " simit " from Turkey. It is taken from iPad 2, therefore it is a JPEG with dimensions 720*960 . The problem is, when I use javax.imageio.ImageIO.read method, the image it strangely imports is to a BufferedImage rotated to left and becomes 960*720 . I reproduced this in my Sun JVM 1.6.0_29 on OS X and Sun JVM 1.6.0_26 on Debian. Here's the code: public class Main { public static void main(String[] args) throws Exception { FileInputStream stream = new FileInputStream(new File("IMG_0159.JPG")); BufferedImage img = ImageIO.read(stream);

This question already has an answer here: JPEG image with wrong colors 7 answers When I save this image: with this method: private final static Path ROOT_PATH = Paths.getPath("C:/images"); private static void saveImageFromWebSimple(final String url) { URL u = null; try { u = new URL(url); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } String file = url.substring(url.indexOf("//") + 2); Path filePath = ROOT_PATH.resolve(file); try { Files.createDirectories(filePath.getParent()); BufferedImage img = ImageIO.read(u); ImageIO.write(img, "jpg",