📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      When should you use inheritance over

      composition?
      A When you want to reuse code without establishing an "is-a" relationship. Correct Answer Incorrect Answer
      B When the relationship between classes is "has-a". Correct Answer Incorrect Answer
      C When the subclass is a specialized type of the superclass ("is-a" relationship). Correct Answer Incorrect Answer
      D When you need to achieve multiple inheritance of implementation. Correct Answer Incorrect Answer
      E When you want to avoid polymorphism. Correct Answer Incorrect Answer

      Solution

      Inheritance is appropriate when there's a clear "is-a" relationship, meaning the subclass is a specific kind of the superclass and can substitute for it (Liskov Substitution Principle). Composition ("has-a" relationship) is generally preferred for code reuse when the "is-a" relationship doesn't hold.

      Practice Next
      More IT Operating System Questions
      ask-question