I am trying to learn how to fade in and out images into another image or from another image. So, if I have 2 images, and 1 is being displayed at the moment, I want to display another image in the background and fade the first image out into the 2nd image. OR, I want to set the focus on
Tag: image
Read Image Metadata from single file with Java
I want to read image metadata from a single file. I tried the following code: http://johnbokma.com/java/obtaining-image-metadata.html When I run it, I get build successful but nothing happens. Please help 🙂 Answer You haven’t specified the path to the file correctly. The change below should indicate this! EDIT – Simpler code example We are now statically defining which file to use.
How to improve image rotation quality in Graphics2D?
Currently I am using this code (which I found here) to rotate images in Java. The code works well, but I am not satisfied with the quality of the rotated image. How can I improve it? Do it need a separate library that? Answer You should set RenderingHints.KEY_INTERPOLATION and RenderingHints.KEY_RENDERING as well. Here is the complete working code:
JFrame Image, paint on top of it
I create a frame with an image with this code: That works fine, but now I want to paint something in that opened frame (on top of the image). I’m quite new in Java, and I’ve allready tried to make a class that extends JFrame, with a paint(Graphics g) method in it, but it wouldn’t work, I only see the
how do i use an image in java gui
Hi im making a Gui programme using a null layout and a setBounds() method for lay out . In the programme I want 25 strings printed out on the screen in random locations . I know that i could do this with a for loop however i have been trying this to no avail. I have been trying this and
Watermarking with PDFBox
I am trying to add a watermark to a PDF specifically with PDFBox. I’ve been able to get the image to appear on each page, but it loses the background transparency because it appears as though PDJpeg converts it to a JPG. Perhaps there’s a way to do it using PDXObjectImage. Here is what I have written thus far: Answer
Java: Rotating Images
I need to be able to rotate images individually(in java). The only thing I have found so far is g2d.drawImage(image, affinetransform, ImageObserver ). Unfortunately, I need to draw the image at a specific point, and there is no method with an argument that 1.rotates the image separately and 2. allows me to set the x and y. any help is
Java: Filling a BufferedImage with transparent pixels
I have an off-screen BufferedImage, constructed with the type BufferedImage.TYPE_INT_ARGB. It can contain anything, and I’m looking for a way to (fairly efficiently) completely overwrite the image with transparent pixels, resulting in an ‘invisible’ image. Using something like this: Has no effect. One possible method might be just to write over every pixel in the BufferedImage, but I’m not sure
How to scale a BufferedImage
Following the javadocs, I have tried to scale a BufferedImage without success here is my code: I can’t understand why it is not working, any help? Answer AffineTransformOp offers the additional flexibility of choosing the interpolation type. The fragment shown illustrates resampling, not cropping; this related answer addresses the issue; some related examples are examined here.
How to check a uploaded file whether it is an image or other file?
In my web application I have an image uploading module. I want to check the uploaded file whether it’s an image file or any other file. I am using Java in server side. The image is read as BufferedImage in java and then I am writing it to disk with ImageIO.write() How shall I check the BufferedImage, whether it’s really