Object Oriented Programming(OOP) Interview Questions and Answers

OOP Interview Questions

Object Oriented Programming(OOP) Interview Questions and Answers

Object-oriented programming technique is one of the programming approaches used by the programmers to develop a different web and mobile applications. It is basically based on the principle of class, object, data hiding, abstraction, encapsulation, modularity, inheritance and polymorphism. Many of the most widely-used programming languages are multi-paradigm programming languages that support object-oriented programming to a greater or lesser degree, typically in combination with imperative, procedural programming. Most object-oriented languages include C++, C#, Java, Python, PHP, JavaScript, Ruby, Perl, Object Pascal, Swift, Objective-C, Dart, Scala, Smalltalk, and LISP.

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What is OOPs?

What are the concepts of OOPS?

Can you define object?

Can you define Class?

Can you define Abstraction?

Write an example of abstraction class and method in java?

Can you define Encapsulation?

Write an example of Encapsulation in Java?

Can you define Polymorphism?

Write an example of polymorphism in Java?

Can you define Inheritance?

What is the syntax of Inheritance in Java?

What is the main difference between an Object based programming language and Object-oriented programming language?

Can you define association?

Can you define composition?

Can you aggregation?

What is object clone?

Can you explain Manipulators?

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Can you define constructor?

Can you define Destructor?

Can you define Inline function?

Can you define virtual function?

Can you define abstract class?

Can you define interface?

Can you explain friend function?

Can you explain function overloading?

Can you explain ternary operator?

Can you explain operator overloading?

Can you explain the finalize method?

What are different types of arguments?

Can you explain super keyword?

Can you explain method overriding?

Can you explain exception handling?

Can you explain tokens?

What is the difference between overloading and overriding?

What is the difference between class and an object?

What is the difference between structure and a class?

Can you define abstraction?

What are access modifiers?

Can you explain sealed modifiers?

How can we call the base method without creating an instance?

What is the difference between new and override?

What are the various types of constructors?

What is early and late binding?

What is ‘this’ pointer?

What is the default access modifier in a class?

Can you explain pure virtual function?

What are all the operators that cannot be overloaded?

Why java is does not support multiple inheritances?

What are the pros of Oops programming?

What are the types of inheritance?

What are the types of constructor?

What is syntax of constructor declaration in python?

Which keyword can be used for overloading?

Give an example of constructor in python?

How to Crate empty Class in Python?

Which OOPs concept is used as a reuse mechanism?

When the finalize method is used?

How to create class & object in python?

Give an Example of encapsulation in Python?

How to achieve data abstraction?

What are some examples of tokens?

Give an example of abstraction in Python?

Give an example of overloading less than operator in Python?

What are the languages come under oops concept?