private 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();
		}
	}