Interview Q&A / Object-Oriented Programming

INTERVIEW Q&A · 69 QUESTIONS

Object-Oriented Programming interview questions

The four pillars, interfaces, abstract classes and design basics.

  1. Why do many developers call Singleton an anti-pattern?

    It is global state in disguise: hidden dependencies, hard-to-reset state between tests, tight coupling to one concrete class, and trouble when you later need two instances.

    IntermediateQuick answer1 min read