Java image resize, maintain aspect ratio

Question

I have an image which I resize:

if((width != null) || (height != null))
{
    try{
        // scale image on disk
        BufferedImage originalImage = ImageI         


        

Answer 1

Load image:

BufferedImage bufferedImage = ImageIO.read(file);   

Resize it:

private BufferedImage resizeAndCrop(BufferedImage bufferedImage, Integer width, Integer height) {

    Mode mode = (double) width / (double) height >= (double) bufferedImage.getWidth() / (double) bufferedImage.getHeight() ? Scalr.Mode.FIT_TO_WIDTH
            : Scalr.Mode.FIT_TO_HEIGHT;

    bufferedImage = Scalr.resize(bufferedImage, Scalr.Method.ULTRA_QUALITY, mode, width, height);

    int x = 0;
    int y = 0;

    if (mode == Scalr.Mode.FIT_TO_WIDTH) {
        y = (bufferedImage.getHeight() - height) / 2;
    } else if (mode == Scalr.Mode.FIT_TO_HEIGHT) {
        x = (bufferedImage.getWidth() - width) / 2;
    }

    bufferedImage = Scalr.crop(bufferedImage, x, y, width, height);

    return bufferedImage;
}

Using Scalr library:

    org.imgscalr
    imgscalr-lib
    4.2