Communication methodology to connect Desktop to Android with out internet connection

i wanted to communication between Desktop t开发者_高级运维o Android device with out internet connection.

Kindly any one suggest me what the possible and best methodology to do so.

As per my knowledge please find below : 1) Wifi 2) Blutooth 3) Socket Programming

but i dont know which is the best methodolog.

Thanks and regards, Dhaval