In my situation as a student, I still do not hold a lot of money. With that, it is better for me to save money and make it available anytime. In the future, if I already have a job and source of income, I can have more savings and maybe divide it and use the half for investment.
Choose investment specially if your money start in small no one getting rich because his small money was just deposit in the bank but many people did invest and become rich like Bill gates and Warren Butler. They always invested as they could then now they become as one known famous rich in the world. Our money in the bank will just sleep and earn a little bit of monthly interest but making some investments will multiply your money many times.