The trouble with CS courses is that you will never use half of what were taught. But you will only find out which half was useful ten or so years down the track. University courses should expand your mind, teach you critical thinking and foundations. It's an investment for the long term.

The way I see it:

If they are teaching you Java - then it's a waste of time.

If you are learning C, Lisp/Scheme, compilers, algorithms, databases, logic, math, etc - then some of it will be very useful in the years to come.