If you have already studied JSP and Android you go for advance programming especially in Java. In market, demand for Java developer is increasing day-by-day. If you have strong concept of J2SE, then JSP would be a plus point for you. Later on, you can learn any framework of jsp like Spring MVC or hibernate etc. to get strong hold on Java web development.
I do the same in my final year project and now I'm strong in development any kind of applications like desktop and web application in Java.