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Java Programming Questions and Answers

Software Programming : Java Programming QUESTIONS AND ANSWERS :: part5 : 6 to 10

Following Software Programming language Entrance Multiple choice objective type questions and answers will help you in Software Programming 2024 examinations :

6.In object oriented programming new classes can be defined by extending existing classes. This is an example of:

Encapsulation

Interface

Composition

Inheritance

Aggregation.

7.What is the error in the following class definitions? Abstract class xy { abstract sum (int x, int y) { } }

Class header is not defined properly.

Constructor is not defined.

Method is not defined properly

Method is defined properly

No error.

8.Polymorphism

Is not supported by Java

Refers to the ability of two or more objects belonging to different classes to respond to exactly the same message in different class-specific ways

Simplifies code maintenance

Not simplifies code manintenance

Refers to the ability of two or more objects belonging to different classes to respond to exactly the same message in different class –specific ways and simplifies code maintenance.

9.Which of the following does not belong: If a class inherits from some other class, it should #65. Which of the following does not belong: If a class inherits from some other class, it should

Make use of the parent class's capabilities

Over-ride or add the minimum to accomplish the derived class' purpose

Over-ride all the methods of its parent class

Make sure the result "IS-A-KIND-OF" its base class

Make sure the result “contains” its base class.

10.Which of these field declarations are legal within the body of an interface?

Private final static int answer = 42

public static int answer=42

final static answer =42

int answer

No error.

More Java Programming QUESTIONS AND ANSWERS available in next pages