How to Rotate Image in Java on Swing Window

on November 23, 2016

Post Views: 3,189

Rotate Image in Java

In this tutorial, I am writing simple swing program about, How to Rotate Image in Java on Swing Window. The example program were tested and output were shared in the same post.

ImageRotate.java

package com.dineshkrish.swing;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
/**
* 
* @author Dinesh Krishnan
*
*/
public class ImageRotate extends JPanel {
private File imageFile;
public ImageRotate(String fileName) {
if(fileName != null && !fileName.isEmpty()) {
imageFile = new File(fileName);
}
}
@Override
public void paintComponent(final Graphics g) {
try {
// Loading the Image
BufferedImage image = ImageIO.read(imageFile);
AffineTransform af = AffineTransform.getTranslateInstance(100, 100);
// Rotating the Image in 90 degree
af.rotate(Math.toRadians(90), image.getWidth() /2, image.getHeight()/2);
Graphics2D graphics2d = (Graphics2D)g;
graphics2d.drawImage(image, af, null);
graphics2d.dispose();
} catch (IOException e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
}
public static void main(String[] args) {
String windowTitle = "Image Rotate";
// You can change the Image file and Path accordingly
ImageRotate panel = new ImageRotate("java.png");
// Window
JFrame frame = new JFrame();
frame.setTitle(windowTitle);
frame.setSize(400, 400);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Adding the Panel to Window
frame.add(panel);
frame.setVisible(true);
}
}