Mikalai, in the tutorial section you quoted, it says
The important thing to remember is that parameters are always classified as "variables" not "fields".
Note that they do not say
local variables, just variables. So variable is a general category, and local variables and parameters are two different types of variable. One could argue that a parameter is
like a local variable, more thana class or instanc evariable - but they're still not the same thing.
As far as P Bakker's original point, it's a fair point to note that the book is contradicting itself in those two quotes. I would say it's best to change this one:
These parameters are local variables that have been pre-initialized.
to either drop the "local", or add "like": "these parameters are
like local variables."