Suppose we have
class C{...}...C ob1, ob2;...What does an assignment
ob1 = ob2;mean?
Object variables really declare references to objects implicitly.
References behave as "pointers".
Reference assignment
ob1 = ob2;
says
"Make ob1 point to where ob2 points."
There may be other references to ob1 not shown.
When there are no more references, the object can be garbage-collected : its space in memory is recycled to other uses.
Before:
After:
Caution: Any modification to ob2 will now be "felt" by ob1.
