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Object Oriented Programming Practice Questions – Page 2 | PariksaHub

Practice/Core Java/Object Oriented Programming

Object Oriented ProgrammingPractice Questions

Practice Object Oriented Programming multiple-choice questions from Core Java. Choose an answer and review the result and available explanations.

Question 11 of 15

What is the primary role of a constructor in OOP?

To destroy objects

To initialize newly created objects

To allocate memory for files

To overload operators

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Question 12 of 15

Which statement about constructors is generally true?

They must have a return type

Their name can be anything

Their name is same as the class name

They can be static methods

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Question 13 of 15

Which relationship is represented by “HAS-A”?

Inheritance

Polymorphism

Abstraction

Composition/Aggregation

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Question 14 of 15

Which of the following practices tends to increase coupling between classes the most?

Using interfaces

Using well-defined abstract classes

Using dependency injection

Using many public fields directly

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Question 15 of 15

Which principle states that “a class should have only one reason to change”?

Single Responsibility Principle

Liskov Substitution Principle

Interface Segregation Principle

Open/Closed Principle

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