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OOAD Interview Questions
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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?

 550

What is difference between encapsulation and abstraction?

 570

Difference between encapsulation and data hiding ?

 509

Difference between abstraction and implementation hiding ?

 583

What are the features of encapsulation ?

 561

Difference between composition and inheritance ?

 550

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

 564

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

 608

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

 1 1007

Does a class inherit the constructor of its super class?

 518

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

 538

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

 515

How many methods are there in the externalizable interface?

 557

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

 610

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

 516

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Un-Answered Questions { OOAD }

Write a program to show the inheritance used in a class.

554

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

538

What is the difference between function overloading and over riding?

560

Explain about the design phase?

589

What is the difference between an error and an exception?

513




What's the benefit of using inheritance?

669

How do we implement serialization actually?

550

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

529

Explain the abstract class modifier?

485

Tell me something about abstract classes?

568

Why are virtual users created?

628

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

562

Explain the rationale behind object oriented concepts?

594

Explain colloboration

512

What is diamond inheritance problem? How java 8 solves this problem?

659

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