@SarithaReddy,
Meaningless question without knowing your calorie requirement and intake.
If the only thing you're ingesting is a litre of milk a day then yeah, you're doing OK.
If it's a chaser for 15 big macs, forget it.
Milk, Whole
Calories in 100ml of milk
Calories 66.9kcal
Carbohydrate 4.7g
Protein 3.3g
Fat 3.9g
Fibre 0.0g