Blocking in terms of java.io/java.nio

Question

I just read ...

Classes that work with streams are located in two packages: java.io and java.nio. Classes from the former implement blocking of input/

Answer 1

Blocking basically refers to when a thread invokes a read() or write(), it is blocked from doing anything else until there is some data to read or the data is written. The thread can do NOTHING else in the meantime.

So blocking is to do with the thread itself, not the data source.