public static void copy(InputStream in, File file) {
		try {
			OutputStream out = new FileOutputStream(file);
			byte[] buf = new byte[1024];
			int len;
			while ((len = in.read(buf)) > 0) {
				out.write(buf, 0, len);
			}
			out.close();
			in.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}