OOAD Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

OOAD Interview Questions

Questions Answers Views Company eMail

What is bootstrap, extension and system class loader? Or can you explain primordial class loader?

950

What are inner classes and what is the practical implementation of inner classes?

841

What is the use if instanceof keyword?

1105

What is a constructor in class?

1037

What is the use if instanceof keyword? And how do refer to a current instance of object?

905

What is bootstrap, extension and system class loader?

949

Can constructors be parameterized?

931

Define exceptions?

881

Can you explain primordial class loader?

874

What's the main difference between arraylist / hashmap and vector / hashtable?

1010

What is difference between static and non-static fields of a class?

1015

What is the practical implementation of inner classes?

908

How do we implement serialization actually?

891

What is serialization? How do we implement serialization actually?

899

What is the difference between oop and sop?

1322

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Un-Answered Questions { OOAD }

What is sealed modifiers?

970

Why dynamic binding is used in object-oriented programming?

1042

Explain what is an object?

921

What is the difference between a class and a structure?

934

Give any criteria when you use an abstract class and an interface?

902

What is the use of ‘finalize’?

977

State some of the advantages of object oriented programming?

1059

What is the difference between class inheritance and interface inheritance?

1042

what is full form OOP?

1004

What is an abstract property. Give an example?

898

What is the difference between a virtual method and an abstract method?

893

Can we have a default method definition in the interface without specifying the keyword "default"?

931

What are different types of arguments?

1049

Explain about inheritance?

988

What is Abstract method and how different from Virtual Method?

870

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