Object Oriented Programming: Questions And Answers

Explore Questions and Answers to deepen your understanding of Object Oriented Programming.

47 Short 36 Medium 25 Long Answer Questions Question Index

Short Answer Questions

Question 1. What is Object Oriented Programming (OOP)?

Question 2. What are the main principles of OOP?

Question 3. What is a class in OOP?

Question 4. What is an object in OOP?

Question 5. What is encapsulation in OOP?

Question 6. What is inheritance in OOP?

Question 7. What is polymorphism in OOP?

Question 8. What is abstraction in OOP?

Question 9. What is a constructor in OOP?

Question 10. What is a destructor in OOP?

Question 11. What is method overloading in OOP?

Question 12. What is method overriding in OOP?

Question 13. What is a static method in OOP?

Question 14. What is a static variable in OOP?

Question 15. What is a final class in OOP?

Question 16. What is a final method in OOP?

Question 17. What is an abstract class in OOP?

Question 18. What is an interface in OOP?

Question 19. What is a package in OOP?

Question 20. What is a namespace in OOP?

Question 21. What is method hiding in OOP?

Question 22. What is method chaining in OOP?

Question 23. What is the difference between a class and an object in OOP?

Question 24. What is the difference between inheritance and composition in OOP?

Question 25. What is the difference between method overloading and method overriding in OOP?

Question 26. What is the difference between an abstract class and an interface in OOP?

Question 27. What is the difference between a static method and an instance method in OOP?

Question 28. What is the difference between a static variable and an instance variable in OOP?

Question 29. What is the difference between early binding and late binding in OOP?

Question 30. What is the difference between composition and aggregation in OOP?

Question 31. What is the difference between method hiding and method overriding in OOP?

Question 32. What is the difference between a constructor and a method in OOP?

Question 33. What is the difference between a class and a struct in OOP?

Question 34. What is the difference between a class and an interface in OOP?

Question 35. What is the difference between a class and a module in OOP?

Question 36. What is the difference between a class and a package in OOP?

Question 37. What is the difference between a class and a namespace in OOP?

Question 38. What is the difference between a class and a file in OOP?

Question 39. What is the difference between a class and a library in OOP?

Question 40. What is the difference between a class and a framework in OOP?

Question 41. What is the difference between a class and a program in OOP?

Question 42. What is the difference between a class and a project in OOP?

Question 43. What is the difference between a class and a solution in OOP?

Question 44. What is the difference between a class and a component in OOP?

Question 45. What is the difference between a class and a control in OOP?

Question 46. What is the difference between a class and a form in OOP?

Question 47. What is the difference between a class and a window in OOP?

Medium Answer Questions

Question 1. What is Object Oriented Programming (OOP)?

Question 2. What are the main principles of OOP?

Question 3. What is the difference between a class and an object?

Question 4. What is encapsulation in OOP?

Question 5. What is inheritance in OOP?

Question 6. What is polymorphism in OOP?

Question 7. What is the purpose of abstraction in OOP?

Question 8. What is the difference between method overloading and method overriding?

Question 9. What is a constructor in OOP?

Question 10. What is a destructor in OOP?

Question 11. What is the difference between shallow copy and deep copy?

Question 12. What is the difference between composition and inheritance?

Question 13. What is the purpose of the 'final' keyword in OOP?

Question 14. What is the purpose of the 'static' keyword in OOP?

Question 15. What is the purpose of the 'this' keyword in OOP?

Question 16. What is the purpose of the 'super' keyword in OOP?

Question 17. What is the purpose of the 'abstract' keyword in OOP?

Question 18. What is the purpose of the 'interface' keyword in OOP?

Question 19. What is the purpose of the 'package' keyword in OOP?

Question 20. What is the purpose of the 'import' keyword in OOP?

Question 21. What is the purpose of the 'extends' keyword in OOP?

Question 22. What is the purpose of the 'implements' keyword in OOP?

Question 23. What is the purpose of the 'new' keyword in OOP?

Question 24. What is the purpose of the 'instanceof' keyword in OOP?

Question 25. What is the purpose of the 'try-catch' block in OOP?

Question 26. What is the purpose of the 'throw' keyword in OOP?

Question 27. What is the purpose of the 'throws' keyword in OOP?

Question 28. What is the purpose of the 'finally' block in OOP?

Question 29. What is the purpose of the 'assert' keyword in OOP?

Question 30. What is the purpose of the 'enum' keyword in OOP?

Question 31. What is the purpose of the 'synchronized' keyword in OOP?

Question 32. What is the purpose of the 'volatile' keyword in OOP?

Question 33. What is the purpose of the 'transient' keyword in OOP?

Question 34. What is the purpose of the 'native' keyword in OOP?

Question 35. What is the purpose of the 'strictfp' keyword in OOP?

Question 36. What is the purpose of the 'default' keyword in OOP?

Long Answer Questions

Question 1. What is Object Oriented Programming (OOP)?

Question 2. Explain the four main principles of Object Oriented Programming.

Question 3. What is the difference between a class and an object?

Question 4. What is encapsulation in Object Oriented Programming?

Question 5. How does inheritance work in Object Oriented Programming?

Question 6. What is polymorphism in Object Oriented Programming?

Question 7. What are the advantages of using Object Oriented Programming?

Question 8. What is the role of constructors in Object Oriented Programming?

Question 9. Explain the concept of method overloading in Object Oriented Programming.

Question 10. What is method overriding in Object Oriented Programming?

Question 11. What is the difference between static and non-static methods?

Question 12. What is the purpose of the 'this' keyword in Object Oriented Programming?

Question 13. What is the 'super' keyword used for in Object Oriented Programming?

Question 14. Explain the concept of abstract classes in Object Oriented Programming.

Question 15. What is an interface in Object Oriented Programming?

Question 16. What is the difference between an abstract class and an interface?

Question 17. What is the purpose of the 'final' keyword in Object Oriented Programming?

Question 18. What is the difference between composition and inheritance?

Question 19. Explain the concept of method overriding in Object Oriented Programming.

Question 20. What is the role of access modifiers in Object Oriented Programming?

Question 21. What is the difference between public, private, and protected access modifiers?

Question 22. What is the purpose of the 'static' keyword in Object Oriented Programming?

Question 23. What is the difference between an instance variable and a class variable?

Question 24. Explain the concept of method chaining in Object Oriented Programming.

Question 25. What is the difference between early binding and late binding?