Resize image while keeping aspect ratio in Java

Question

im trying to resize bufferdImage in memory in java but to keep the aspect ratio of the image im have something like this but this is not good

int w = pictu         


        

Answer 1

private static BufferedImage resize(BufferedImage img, int width, int height) {

        double scalex = (double) width / img.getWidth();
        double scaley = (double) height / img.getHeight();
        double scale = Math.min(scalex, scaley);

        int w = (int) (img.getWidth() * scale);
        int h = (int) (img.getHeight() * scale);

        Image tmp = img.getScaledInstance(w, h, Image.SCALE_SMOOTH);

        BufferedImage resized = new BufferedImage(w, h, img.getType());
        Graphics2D g2d = resized.createGraphics();
        g2d.drawImage(tmp, 0, 0, null);
        g2d.dispose();

        return resized;
    }