Java Utililty Methods Image Scale

ImageIcon scaledIcon = new ImageIcon(image) {
    private static final long serialVersionUID = 1L;
    public int getIconWidth() {
        return (int) (image.getWidth(null) * scale);
    public int getIconHeight() {
        return (int) (image.getHeight(null) * scale);
    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.drawImage(image, x, y, getIconWidth(), getIconHeight(), c);
};
return scaledIcon;

if (icon != null) {
    int dstWidth = newMaxWidth;
    int dstHeight = newMaxHeight;
    int srcWidth = icon.getIconWidth();
    int srcHeight = icon.getIconHeight();
    if ((dstWidth < 0) || (dstHeight < 0)) { 
        dstWidth = icon.getIconWidth();
        dstHeight = icon.getIconHeight();
...

image = new ImageIcon(image).getImage();
final int imgWidth = image.getWidth(null);
final int imgHeight = image.getHeight(null);
final int preferredWidth = Math.min(imgWidth, maxWidth);
final int preferredHeight = Math.min(imgHeight, maxHeight);
final double scaleX = (double) preferredWidth / (double) imgWidth;
final double scaleY = (double) preferredHeight / (double) imgHeight;
final double bestScale = Math.min(scaleX, scaleY);
...

BufferedImage bi = toBufferedImage(imagen);
int w = (int) (bi.getWidth() * scaleW);
int h = (int) (bi.getHeight() * scaleH);
bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bi.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
        RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
AffineTransform at = AffineTransform.getScaleInstance(scaleW, scaleH);
...

BufferedImage resizedImg = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = resizedImg.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(srcImg, 0, 0, w, h, null);
g2.dispose();
return new ImageIcon(resizedImg);

BufferedImage resizedImg = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = resizedImg.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(icon.getImage(), 0, 0, w, h, null);
g2.dispose();
return resizedImg;

int w = srcImg.getIconWidth() * h / srcImg.getIconHeight();
if (w > maxWidth) {
    w = maxWidth;
    h = srcImg.getIconHeight() * w / srcImg.getIconWidth();
if (w > srcImg.getIconWidth() || h > srcImg.getIconHeight()) {
    w = srcImg.getIconWidth();
    h = srcImg.getIconHeight();
...

BufferedImage bimg = ImageIO.read(imageFile);
int width = bimg.getWidth();
int height = bimg.getHeight();
double scalex = componentToFit.getVisibleRect().getWidth() / (double) width;
double scaley = componentToFit.getVisibleRect().getHeight() / (double) height;
return (scalex < scaley) ? scalex : scaley;

if (image == null)
    return null;
BufferedImage sourceImage = toBufferedImage(image);
int scaledWidth = (int) (sourceImage.getWidth() * scale);
if (scaledWidth <= 0)
    return null;
int scaledHeight = (int) (sourceImage.getHeight() * scale);
if (scaledHeight <= 0)
...

Dimension imageSize = new Dimension(image.getWidth(IMAGE_OBSERVER), image.getHeight(IMAGE_OBSERVER));
imageSize.width *= widthPercentage;
imageSize.height *= heightPercentage;
Image scaledImage = image.getScaledInstance(imageSize.width, imageSize.height, SCALE_METHOD);
return scaledImage;