QUIZ ON : JAVA - ENCAPSULATION AND INHERITANCE

Question No# : 01

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Which access specifier allows accessibility of a member only within the same class where it is declared?
Which access specifier allows accessibility of a member only within the same class where it is declared?

A. publicpublic

B. privateprivate

C. protectedprotected

D. defaultdefault

Question No# : 02

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Wrapping up of data and method into a single unit is called___
Wrapping up of data and method into a single unit is called___

A. EncapsulationEncapsulation

B. AbstractionAbstraction

C. InheritanceInheritance

D. PolymorphismPolymorphism

Question No# : 03

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An OOP feature that allows all members of a class to be the members of another class.
An OOP feature that allows all members of a class to be the members of another class.

A. EncapsulationEncapsulation

B. AbstractionAbstraction

C. InheritanceInheritance

D. PolymorphismPolymorphism

Question No# : 04

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Which keyword allows Inheritance?
Which keyword allows Inheritance?

A. extendextend

B. extendsextends

C. forfor

D. protectedprotected

Question No# : 05

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Which access specifier allows accessibility by all classes in the same package, but only by subclasses in a different package?
Which access specifier allows accessibility by all classes in the same package, but only by subclasses in a different package?

A. publicpublic

B. privateprivate

C. protectedprotected

D. defaultdefault

Question No# : 06

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A static member a is declared in a class named ‘Myclass’, write the statement to initialise it with 5, from a function in another class.
A static member a is declared in a class named ‘Myclass’, write the statement to initialise it with 5, from a function in another class.

A. a=5; a=5;

B. a of Myclass=5;a of Myclass=5;

C. Myclass.a=5; Myclass.a=5;

D. a.Myclass=5;a.Myclass=5;

Question No# : 07

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Which feature can be implemented using encapsulation?
Which feature can be implemented using encapsulation?

A. InheritanceInheritance

B. AbstractionAbstraction

C. PolymorphismPolymorphism

D. OverloadingOverloading

Question No# : 08

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How can Encapsulation be achieved?
How can Encapsulation be achieved?

A. Using Access Specifiers Using Access Specifiers

B. Using only private membersUsing only private members

C. Using inheritance Using inheritance

D. Using AbstractionUsing Abstraction

Question No# : 09

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What is the purpose of an abstract class
What is the purpose of an abstract class

A. To provide help with database
connectivityTo provide help with database
connectivity

B. To provide data input to other classesTo provide data input to other classes

C. To provide security to other classesTo provide security to other classes

D. To provide an appropriate base class
from which other classes can inheritTo provide an appropriate base class
from which other classes can inherit

Question No# : 10

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Inheritance is referred to as
Inheritance is referred to as

A. "is a" relationship"is a" relationship

B. "have a" relationship"have a" relationship

C. Both A and BBoth A and B

D. None of TheseNone of These