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

OOAD Interview Questions

Questions Answers Views Company eMail

If a method definition has been specified in class , its base class , and the interface which the class is implementing, which definition will be picked if we try to access it using interface reference and class object?

999

What is difference between encapsulation and abstraction?

1006

Difference between encapsulation and data hiding ?

909

Difference between abstraction and implementation hiding ?

1101

What are the features of encapsulation ?

991

Difference between composition and inheritance ?

976

Are constructors inherited? Can a subclass call the parent's class constructor? When?

999

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

1041

Which of the following is tightly bound ? Inheritance or composition ?

1 1656

Does a class inherit the constructor of its super class?

952

How many methods do u implement if implement the serializable interface?

974

What does the “abstract” keyword mean in front of a method? A class?

982

How many methods are there in the externalizable interface?

1027

What interface must an object implement before it can be written to a stream as an object?

1087

What does it mean that a method or class is abstract?

982

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Un-Answered Questions { OOAD }

What is constructor and virtual function? Can we call virtual funciton in a constructor?

1017

Explain the purpose of composition.

1040

Why does java not support multiple inheritance?

1084

What is a virtual function?

992

explain dynamic binding

1036

What is dynamic or run time polymorphism?

1025

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

892

Explain what is meant by polymorphism?

1076

What are manipulators?

1042

What do you mean by abstract class?

1063

Explain basic concepts of OOPS?

932

Explain about encapsulation?

1035

What is the use of destructive method?

964

Difference between abstraction and implementation hiding ?

1101

What is a nested interface?

1052

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