Image Manipulation using Java

by Abdul Rawoof A R Updated: Feb 3, 2023

Guide Kit

Java is one of the popular languages to implement image manipulation. It provides immediate access to the image pixels and color information and it also allows conversions and image processing.

Java supports only the following formats for images by default,

JPEG
PNG
BMP
WEBMP
GIF

Other than that, if we attempt to work with an image file that is different from the above-mentioned formats, your application will not be able to read or understand it and it will throw a NullPointerException when we access the BufferedImage variable. Java implements a particular type of object which is called 'BufferedImage' for images in Java and classes required in Java to perform the read and write operations. For that, we must import the file class first. BufferedImage is nothing but it is a subclass of the image class and it is used to manipulate and handle the image data. It is made up of the ColorModel of image data.

Here is an example of how you can implement image manipulation in Java:

Fig 1: Preview of the output that you will get on running this code from your IDE.

Code

Java : How to do image manipulation (pan, zoom, flip and rotate)?

JavaLines of Code : 41License : Strong Copyleft (CC BY-SA 4.0)

Dependent Libraries :

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.WindowConstants;

public class ScrolImg implements Runnable {
    private JFrame  frame;
/* Start 'Runnable' interface methods. */
    public void run() {
        showGui();
    }
/* End 'Runnable' interface methods. */
    private JScrollPane createMainPanel() {
        Icon ico = new ImageIcon("worldmap.jpg");
        JLabel label = new JLabel(ico);
        JScrollPane scrollPane = new JScrollPane(label);
        scrollPane.setPreferredSize(new Dimension(800, 600));
        return scrollPane;
    }

    private void showGui() {
        frame = new JFrame("ScrolImg");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.add(createMainPanel(), BorderLayout.CENTER);
        frame.pack();
        frame.setLocationByPlatform(true);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        ScrolImg instance = new ScrolImg();
        EventQueue.invokeLater(instance);
    }
}

Instructions

Copy the code using the "Copy" button above, and paste it in a Java file in your IDE(IntelliJ Preferable).
Add the required dependencies and import them in java file.
Run the file to generate the output.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.

I found this code snippet by searching for "image manipulation using java" in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

The solution is created in Java 11.0.17.
The solution is tested on Java 11.0.17.

Using this solution, we are able to manipulate the image using java with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to manipulate the image.

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