Ramesh, who started this bad habbit? Did your dog say you should feed him with your hands? No. This happens when you overly pamper your dog. Feed him on his bowl. Keep the bowl for 15 minutes. If he doesn't eat, take the bowl off and keep the bowl again only at the next scheduled time. If he doesn't eat in 15 minutes, take the bowl off from him again. Do this for 2-3 days, your puppy will start eating on his own.
He's a living being and can't survive empty-stomach. Stop feeding him with hands. Follow my tip and he'll start eating on his own.
Give him plenty of exercise in the form of running and walking and keep fresh water all the time.