OOPS J2EE Interview Questions [30 Questions]

  1. Friend Function OverloadWhy friend function cannot be used to overload the assignment operator?
  2. inner classesWhat are advantages of inner class
  3. what is the difference between call by value, call by reference, call by address?no answers
  4. int i;
    void main()
    int j=100,k;
    what is the output?
  5. What is the need of an abstract class? If I write all of concrete methods in one class and all abstract methods in an interface and extend and implement both in third class assume that third class don't extend any other class?
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