It's a sort of cafe but it's in a factory, a college, or an office building where people collect food and drink from a serving area and take it to a table themselves after paying for it

I think you'd better lodge a complaint to the publisher, for the meaning in your textbook could probably produce misdirect to Chinese students!

Yes but I think it used to be true in the past but that definition I gave you is what it is now. If you want to go to a place to drink coffee you would say cafe. If you say cafeteria people would think you meant a place to have food and drink inside a factory, college etc. 

I think so!

Thanks a lot! I also saw <em>American Heritage Dictionary</em> about the etymology of "cafeteria".<em> </em>It says in book that <em>Spanish cafetería, coffee shop, cafeteria, from café, coffee, from Ottoman Turkish qahveh. </em>It means that cafeteria means cafe in the past, but cafeteria does not mean cafe now. Is what I said right?