Hello Sneha,

Hope you are doing good.

Good to know that you have basic knowledge of JAVA computer language. Btech in CSE provides you with all the knowledge of a basic computer language and skills along with OOPs language. The  computer languages taught to you in BTech course are: Python, Java, MySQL, and ofcourse C Programming.

Basically, C++ is taught to PG level or to Mtech students. In BTech, students are taught with the C programming language in the 1st semester or 1st year. Since C language is the core basic of programming, it is taught for the very first year of UG followed by DSA ( data structure and algorithms) . And, other languages such as Java, python,etc are taught in other semesters.

IF you have basic knowledge of Java , that's very good; you'll be taught Java in the coming semesters of BTech after 1st year.

Hopefully this will help you & clear your doubts.

Best wishes ahead.