Advance tax dilemma


(Guest)
Let's say a person name Vijay started as a freelancer with no other job. He got his 1st job in August and completed that in 2 weeks with good payment let say 12 lakh. He spended very little about 20000 in completing his job. And no other expenses. And he don't know if he going to get any job in future or not but in just one job he got paid good money. So my question is Does he have to pay advance tax? If yes then how? As 1st due date was 15 June. Please answer my query. Thanks