Help with Resizing an Image

Question

Hi everyone,
I have the following code fragment:
BufferedImage image = ImageIO.read(new File(filePath));
Image scaledImage = image.getScaledInstance(100, 100, Image.SCALE_AREA_AVERAGING);
File outputFile = new File(filePath);
ImageIO.write(scaledImage, extension, outputFile);What I want to do (in a servlet) is load up an image (gif/jpg) located at filePath, resize it and then save it back in it's original location. I have gotten as far as above, but of course this doesn't compile because the write() method must take a BufferedImage and not Image.
What modifications do I need to make in order to get this to compile and work?
Many thanks for your help!

Answer 1

Hi ,
try this sample.
    public static void resizeImage() throws IOException {
        File f = new File( "D:/timg/img2.jpg" ) ;
        BufferedImage bi = ImageIO.read( f ) ;
        int actualWidth = bi.getWidth() ;
        int actualHeight = bi.getHeight() ;
        // consider to reduce the image to 50%
        int resultWidth = actualWidth / 2 ;
        int resultHeight = actualHeight / 2 ;
        double sx = (float)(resultWidth) / actualWidth ;
        double sy = (float)(resultHeight) / actualHeight ;
        BufferedImage nbi = new BufferedImage( resultWidth , resultHeight , BufferedImage.TYPE_INT_RGB ) ;
        Graphics2D g2 = nbi.createGraphics() ;
        AffineTransform at = AffineTransform.getScaleInstance( sx , sy ) ;
        g2.setTransform( at ) ;
        g2.drawImage( bi , 0 , 0 , null ) ;
        ImageIO.write( nbi , "png" , new File( "D:/timg/img22.png" ) ) ;
    }