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?

939

What is difference between encapsulation and abstraction?

953

Difference between encapsulation and data hiding ?

847

Difference between abstraction and implementation hiding ?

1045

What are the features of encapsulation ?

942

Difference between composition and inheritance ?

914

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

949

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

963

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

1 1578

Does a class inherit the constructor of its super class?

899

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

901

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

929

How many methods are there in the externalizable interface?

963

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

1018

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

904

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Un-Answered Questions { OOAD }

Can we access interface static method using interface references?

1008

What are the types of polymorphism?

922

Differentiate between an abstract class and an interface?

936

Can we override static methods of a class?

979

Can you use virtual, override or abstract keywords on an accessor of a static property?

941

If a method definition has been specified in the 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?

903

How to achieve data abstraction?

901

Explain about Overloading vs Overriding ?

935

What is function override?

1017

What is the significance of encapsulation?

943

How does abstraction differ from encapsulation.

943

What is single and multiple inheritance?

946

What are the four important foundation concepts of OOP ?

897

What is meant by inheritance? what are the advantages of inheritance?

979

Why are virtual users created?

991

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