Java Programming upcasting and downcasting

Upcasting and Downcasting of objects can be done the way we do for primitives

type casing parent object to child object is called downcasting
downcasting for objects : Child child_obj = (child) parent_object
downcating for primitives : int num = (int) double_value

type casing child object to parent object is called upcasting
upcasting for objects : Parent parent_obj = (Parent) child_object
downcating for primitives : double num = (double) int_value