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?

990

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

876

What is the use if instanceof keyword?

1145

What is a constructor in class?

1072

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

934

What is bootstrap, extension and system class loader?

1004

Can constructors be parameterized?

972

Define exceptions?

915

Can you explain primordial class loader?

922

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

1055

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

1082

What is the practical implementation of inner classes?

976

How do we implement serialization actually?

920

What is serialization? How do we implement serialization actually?

956

What is the difference between oop and sop?

1378

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Un-Answered Questions { OOAD }

What is the main advantage of using inheritance?

1064

Can we override a method by using same method name and arguments but different return types?

934

How do you prevent a class from being inherited by another class?

988

Does java support multiple inheritance? if not, what is the solution?

964

Does PowerShell support OOPs?

1020

What is serialization? How do we implement serialization actually?

956

What is meant by “abstract interface”?

1022

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

876

Can we reduce the visibility of the inherited or overridden method ?

1020

Explain the meaning of object in object oriented programming?

1054

Explain about the analysis phase?

981

What is the function of pure virtual functions?

912

What is the function of messaging metaphor?

1014

What is the main difference between overloading and overriding?

1084

What is the difference between an Abstract class and Interface?

1044

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