文件字节流练习2

private static void copy(File upload,String destination)
    {
        InputStream in = null;
        OutputStream out = null;
        try
        {
            File destination_file = new File(destination);
            
            if(!destination_file.exists())
            {
                destination_file.createNewFile();
            }
            
            
            in = new FileInputStream(upload);
            
            out = new FileOutputStream(destination_file);
            
            byte[] buffer = new byte[1024];
            int count;
            while((count=in.read(buffer))>0)
            {
                out.write(buffer, 0, count);
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
            try
            {
                in.close();
                out.close();
            }
            catch (IOException e1)
            {
                e1.printStackTrace();
            }
        }
    }