Click here to Skip to main content
11,933,905 members (56,624 online)
Rate this:
Please Sign up or sign in to vote.
See more: Java Swing
BufferedImage bimg =;
bimg.setRGB(0, 0, 1234);
int x = bimg.getRGB(0,0);
in the above code i didn't get x as 1234 why ?
Posted 8-Feb-13 0:54am

1 solution

Rate this: bad
Please Sign up or sign in to vote.

Solution 1

That is because in BufferedImages with a ColorModel the pixel is set to the nearest colour chosen. That means that you might not get the colour you wanted because the colours you can set are limited to the colours in the ColorModel.

You can get around that by creating your own BufferedImage and draw the source image onto that and then manipulate those pixels;

package com.bornander.test;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class Program {
  public static void main(String[] args) throws Exception {
    BufferedImage src = File("C:\\Temp\\SomeImage.png"));
    BufferedImage dst = new BufferedImage(src.getWidth(), src.getHeight(), BufferedImage.TYPE_4BYTE_ABGR);
    dst.getGraphics().drawImage(src, 0, 0, null);
    System.out.println("Before: " + dst.getRGB(0, 0));
    dst.setRGB(0, 0, 1234);
    System.out.println("After : " + dst.getRGB(0, 0));

Hope this helps,

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
Top Experts
Last 24hrsThis month

Advertise | Privacy | Mobile
Web04 | 2.8.151126.1 | Last Updated 8 Feb 2013
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100