Bhoomika sharma

 Profile Answers by Bhoomika sharma Questions by Bhoomika sharma

• Dec 23rd, 2008

 

Yes,you cannot change the implementation of ny methods in the base class by the sub classes, thus the answer is (a),

Thus in inheritance you cannot change the methods but you can use them always.

vijay.badola

 Profile Answers by vijay.badola 

• Oct 4th, 2009

 

We can override the implementation of parent class but we cannot change implementation from child class. So 'A' is not correct.

ajrobb

 Profile Answers by ajrobb 

• Sep 22nd, 2010

 

E

Using inheritance, which of the following is not allowed
a) Changing implementation of operation in parent by the subclass
If the parent defines a virtual method, the subclass can provide its own implementation. The object can still be referenced as a parent class object but its performance is modified.
b) Using implementation of operation in parent class by the subclass
Even if the subclass overrides a method, it can access the parent class's method using ::
c) Using attributes in parent class by the subclass
As long as attributes are not private they can be used by the subclass
d) Having operations is subclass which do not exist in parent class
Subclasses may implement extra methods
e) None
Yes.