Q21easy
What is the "Diamond Problem" in Object-Oriented Programming?
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25 Questions Total
Object-Oriented Programming (OOP) MCQs
Topic-wise practice questions for Programming (C++ / Java / Python). Test your knowledge, check solutions on demand, and pace your preparation.
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Practice in Timed ModeQ22medium
A developer wants to create a class Vehicle that can never be instantiated on its own but provides a common startEngine() method for Car and Truck. What should Vehicle be?
Q23medium
You are designing a PaymentSystem. You have different types of payments: CreditCard, PayPal, and Crypto. They all must have a process() method. What is the best way to enforce this?
Q24easy
Which of the following best describes Composition over Inheritance?
Q25medium
In a User class, the password field is set to private and can only be changed via a setPassword() method that checks for a minimum length. Which OOP principle is being applied?