you declare variable  (normal variables, and
objects...) like this ? I am sure you do...


type name value
~~~~~~~~~ ~~~~~~~~ ~~~~~~~~~~~~~~~
int i = 3;
PrintWriter out = new PrintWriter();


so every object is a variable of its class...
Similarly the variable(object) out is declared in
class System...

so we can access it like

System.out

but as it is an object so we can call any of its
method...

System.out.println();

got it... ?