Definitely yes you can apply directly in the college through their official website whenever forms are open for 3 years law programme.there is no entrance exam for the course admission is solely based on qualifying examination.

Candidates interested to apply for admission have to fillup the application by downloading the same from the official website, scan and send the same along with photocopy of relevant certificates by post and to  admissionsdmlaw@gmail.com Don’t send original certificates. Original certificates to be produced at the time of reporting to the college and to be surrendered to the college for university verification

https://www.careers360.com/colleges/shri-dharmasthala-manjunatheshwara-law-college-mangalore/admission