program arduino using HC05

I followed following tutorials.

  1. Upload Sketch Arduino over Bluetooth using Android - Arduino Project Hub
  3. Inexpensively Program Your Arduino via Bluetooth - Wayne's Tinkering Page

I got the same error in all the projects.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
How can I resolve this error ?