OOAD Interview Questions
Questions Answers Views Company eMail

Why are virtual users created?

Wipro,

804

what is virtual function and pure virtual function ?

Infosys,

745

What are virtual functions, base class pointer, derived class pointer, biding references?

HPCL, Hughes Systique Corporation,

758

What is Abstract method and how different from Virtual Method?

700

What do you mean by virtual function and virtual classes?

MCN Solutions,

731

What is polymorphism? When is it employed? give an example.

iNautix,

767

What is the best tool for modeling and ORM framework

Infosys,

752

What is Overloading ? Is it similar to overriding ?

MCN Solutions,

769

Explain the use of Vtable and what are the various problems to override the functions?

Ittiam Systems,

713

Does PowerShell support OOPs?

Microsoft,

773

What is data abstraction? what are the three levels of data abstraction with Example?

TCS,

758

Is it possible to override private virtual methods?

Infosys,

746

Give any criteria when you use an abstract class and an interface?

Sans Pareil IT Services,

732

Define Data Abstraction. What is its importance?

Amazon, Infosys,

743

How to make a class accessible as a web service?

BirlaSoft,

705


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Un-Answered Questions { OOAD }

Is @functionalinterface annotation mandatory to define a functional interface? What is the use of @functionalinterface annotation? Why do we need functional interfaces in java?

932


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?

704


What is a functional interface? What is sam interface?

743


Is it possible to create partial structs, interfaces and methods?

714


Explain the use of Vtable and what are the various problems to override the functions?

713


What is function override?

796


Explain about inheritance hierarchies?

727


What is static and dynamic Binding?

746


Can we use static method definitions in interfaces?

750


What is the difference between class and interface?

765


Name some languages which have object oriented language and characteristics?

765


What are different types of arguments?

845


What is data encapsulation and what's its significance?

791


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

723


Explain method overriding.

797