Regarding class and object

Question

User-1590429200 posted

I have two classes ClsEmployee and inhertited class ClsEmployeeDoc.

1.  

ClsEmployee Emp;
Emp = new ClsEmployee();

Emp = new ClsEmployeeDoc();

2. 

ClsEmployee Emp;
Emp = new ClsEmployee();

ClsEmployee Emp1;

Emp1 = new ClsEmployeeDoc();

what is the difference between the two??

Answer 1

User-1910946339 posted

In the first one you have one variable.  The ClsEmployee instance that you created is no longer referenced and available for garbage collection.

In the second one you have two variables.

Did you have a specific question?

Answer 2

User-1618234021 posted

In both cases, the reference of the parent is pointing to the object of child calss. The only difference is in 1st case you lose the reference to the parent object.