javax.imageio

I've been searching for some solutions from the internet yet I still haven't found an answer to my problem. I've been working or doing a program that would get an image file from my PC then will be edited using Java Graphics to add some text/object/etc. After that, Java ImageIO will save the newly modified image. So far, I was able to do it nicely but I got a problem about the size of the image. The original image and the modified image didn't have the same size. The original is a 2x3 inches-image while the modified one which supposedly have 2x3inches too sadly got 8x14 inches. So, it has gone

Originally I wanted to try whether it is possible to reconstruct redacted data from a JPEG image, given that it is a lossy image format and the pixel values spread into the neighbor pixels. To test whether saving and loading JPEG images is reliable, I wrote the following program that repeatedly saves and loads a JPEG image until it reaches an image that has been seen before. Here is the code: package de.roland_illig.jpg import java.awt.image.BufferedImage import java.io.ByteArrayInputStream import java.io.ByteArrayOutputStream import java.io.File import java.nio.file.Files import java.nio.file

I've looked all over the place, but can't seem to find any easy to understand explanation. (I've found classes and methods written by other Java users that can do this, but I'm hoping to write my own.) Here is the createImage() method of GIFanim . Perhaps that will give you a start. public byte[] createImage() throws Exception { ImageWriter iw = ImageIO.getImageWritersByFormatName("gif").next(); ByteArrayOutputStream os = new ByteArrayOutputStream(); ImageOutputStream ios = ImageIO.createImageOutputStream(os); iw.setOutput(ios); iw.prepareWriteSequence(null); int i = 0; for (AnimationFrame

I am converting an Image into byte[] using following code. public static byte[] extractBytes (String ImageName) throws IOException { ByteArrayOutputStream baos=new ByteArrayOutputStream(); BufferedImage img=ImageIO.read(new File(ImageName)); ImageIO.write(img, "jpg", baos); return baos.toByteArray(); } Now when I am testing my code: public static void main(String[] args) throws IOException { String filepath = "image_old.jpg"; File outp=new File(filepath); System.out.println("Size of original image="+outp.length()); byte[] data = extractBytes(filepath); System.out.println("size of byte[] data="

In an application I'm developing in java, I am using the ImageIO API to scale images, then write them to a directory and then inform a web server that the images are ready to be used. The last call before sending a signal to the web server is the method ImageIO.write() but the web server cannot find the generated images at that moment. ( Few milliseconds latter the web server is able to see them. ). What I suspect is that ImageIO.write() is running asynchronously. I've searched a lot but i couldn't find if ImageIO.write() is a synchronous or asynchronous operation. If ImageIO.write() is not

I have the following code: public BufferedImage urlToImage(String imageUrl) throws MalformedURLException, IOException { URL url = new URL(imageUrl); BufferedImage image = ImageIO.read(url); return image; } That is supposed to return an image from a given URL. I tested with these two randomly chosen URLs: https://www.google.co.ma/images/srpr/logo4w.png http://www.earthtimes.org/newsimage/osteoderms-storing-minerals-helped-huge-dinosaurs-survive_3011.jpg The first one works fine, but the second gives a 403 error: Caused by: java.io.IOException: Server returned HTTP response code: 403 for URL: