Here's a little example that reads and rotates an image 90 degrees.
private String rotateImage(String pathToImage) {
BufferedImage image = null;
String tempFileName = null;
try {
File f = new File(pathToImage);
if (f.exists()) {
image = ImageIO.read(f);
Image rotatedImage = new BufferedImage(image.getHeight(),
image.getWidth(),image.getType());
Graphics2D g2d = (Graphics2D) rotatedImage.getGraphics();
g2d.rotate(Math.toRadians(90.0));
g2d.drawImage(image, 0, -rotatedImage.getWidth(null), null);
g2d.dispose();
//Random name
String timeStampName = UUID.randomUUID().
toString().substring(1, 8);
//Save image to java.io.tmpdir
tempFileName = System.getProperty("java.io.tmpdir") +
timeStampName + ".jpg";
ImageIO.write((BufferedImage) rotatedImage, "jpg",
new File(tempFileName));
}
} catch (Exception e) {
//TODO: Do something here
}
return tempFileName;
}