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

OOAD Interview Questions

Questions Answers Views Company eMail

Can you create an instance of an abstract class?

982

What are abstract methods?

997

Can you create an instance for an abstract class?

943

Do structs support inheritance?

961

What is the main advantage of using inheritance?

1077

What is the base type from which all structs inherit directly?

938

Classes and structs support inheritance. Is this statement true or false?

1004

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

1000

What is virtual multiple inheritance?

994

Write a note about inheritance?

941

What is the need of multiple inheritance?

1067

Explain the concept of multiple inheritance (virtual inheritance). Write about its advantages and disadvantages?

1014

Describe inheritance and non-inheritance of a derived class?

948

Why do we separate interface from implementation?

1014

Define a good interface?

991

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Un-Answered Questions { OOAD }

State two differences between an object and a class.

1127

Define Data Abstraction. What is its importance?

983

What is the difference between an interface and abstract class?

1119

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

1073

Can we override static methods of a class?

1033

What is meant by “abstract interface”?

1024

Can I implement polymorphism using abstract class?

999

What is the base type from which all structs inherit directly?

938

What is the function of messaging metaphor?

1031

Does a class inherit the constructor of its super class?

949

What is function override?

1083

What is an abstract property. Give an example?

946

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

1046

Difference between encapsulation and data hiding ?

900

Explain the purpose of composition.

1035

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