public static void main(String[] args) {
        long startTime = System.nanoTime();
        try {
        File file = new File("F:\\old.gif");
        File newfile = new File("F:\\new.gif");
        FileInputStream in = new FileInputStream(file);
        FileOutputStream out = new FileOutputStream(newfile);
        byte[] b = new byte[1024];
        while(in.read(b,0,1024)!=-1){
            out.write(b,0,1024);
        }
        in.close();
        out.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e){
            e.printStackTrace();
        }
        long time = System.nanoTime()-startTime;
        System.out.println(time/(1000*1000)+"ms");
    }