7.3 java

public class ImageResizer {
    static FileFilter filter = new FileFilter() {



        public boolean accept(File f)

        {

            return f.getName().endsWith("png") || f.getName().endsWith("jpg");

        }

    };
    public static void resize(String path, int width) {
        File fileImage = new File(path);
        File[] files = fileImage.listFiles(filter);
        if (!fileImage.exists() || files.length==0) throw new IllegalArgumentException();
        for (File file : files) {
            try {
                BufferedImage image = ImageIO.read(file);
                image = Scalr.resize(image,Scalr.Mode.FIT_TO_WIDTH,width);
                if (file.getName().endsWith("jpg"))ImageIO.write(image,"jpg",file);
                else if (file.getName().endsWith("png"))  ImageIO.write(image,"png",file);

            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }
}