GeeksforGeeks

Is Java a pure objected oriented language? Can you please give some examples of pure object oriented languages.

Can you specify a porgram to print the numbers from 1 to 10 and their squares without using a loop?

Why should Microsoft provide two different ways for inheritance , One is interfaces & another is abstract classes, when we can achieve all that in interfaces using abstract class itself?

When do we use Abstraction and when do we use Interfaces

Is there any online resource for sample OOP problems and solutions. The problems should be based on simple class diagrams and replationships.

Is java a pure Object Oriented Language?

class B { public : int y; };
class A { public : int x; };

class C : public A, public B { int z; };

int main()
{
  C cc;
  B *bb = 0;
  A *aa = 0;

  bb = &cc;
  aa = &cc;

  cout << aa << "  " << bb << endl;
}

Why aa and bb do not contain the same adddress?

There are two type of flights - Passenger and Cargo
Each type of flight can be SMALL or LARGE.
Problem is to design a take-off control system such that the following precedence is maintained.
1. Passenger > Cargo.
2. If both flights are same type then LARGE > SMALL
3. If both types and sizes are same then flight with longer GroundDuration(i.e ground stay time) has precedence over other flights.

Can you please explain what it means and the difference between these two. Why should we always strive for loose coupling

What does the unidirectional arrow (is navigable) mean in association?

Does A---->B mean that A would have instance(s) of B, but B would not have instances of A?

Why doesn't overloading work for derived classes?

Hypothetically we can use overloaded assignment operator by deviding it parts in place of copy constructor, why still C++ provides both?

How to decide upon the programming paradigm for a given real world problem?

Which one of the following are essential features of an object-oriented programming language?
(i) Abstraction and encapsulatoin
(ii) Strictly-typedness
(iii) Type-safe property coupled with sub-type rule
(iv) Polymorphism in the presence of inheritance

(a) (i) and (ii) only
(b) (i) and (iv) only
(c) (i), (ii) and (iv) only
(d) (i), (iii) and (iv) only

what are proxy objects?

What is an adapter?

What is an Abstract Factory and why would I want to use one?