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?

972

What are abstract methods?

991

Can you create an instance for an abstract class?

935

Do structs support inheritance?

952

What is the main advantage of using inheritance?

1065

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

930

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

996

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

988

What is virtual multiple inheritance?

983

Write a note about inheritance?

927

What is the need of multiple inheritance?

1056

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

994

Describe inheritance and non-inheritance of a derived class?

934

Why do we separate interface from implementation?

1004

Define a good interface?

978

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Un-Answered Questions { OOAD }

What are base class, sub class and super class?

1051

What is the @functionalinterface annotation?

935

Explain about inheritance?

1037

Explain about inheritance hierarchies?

961

What are a base class, subclass, and superclass?

991

Which OOPS concept is used as a reuse mechanism?

1029

Can an interface implement or extend another interface?

992

How will you define abstract classes?

1013

What is the difference between an Abstract class and Interface?

1044

Can an interface have an inner class?

1031

Define Data Abstraction. What is its importance?

975

Do we require a parameter for constructors?

995

what is full form OOP?

1052

Is it possible to provide method implementations in java interfaces? If possible, how do we provide them?

935

What is the difference between new and override?

1024

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