Welcome to the Interfaces and Packages MCQs Page

Dive deep into the fascinating world of Interfaces and Packages with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Interfaces and Packages, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Interfaces and Packages, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Java Programming.

Check out the MCQs below to embark on an enriching journey through Interfaces and Packages. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Java Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Interfaces and Packages. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Interfaces and Packages MCQs | Page 6 of 12

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Q51.

Which of the following is true about methods in an interface in java?

An interface can contain only abstract method.

We can define a method in an interface

Private and protected access modifiers can also be used to declare methods in interface

None of the above

Discuss

Answer: (a).An interface can contain only abstract method.

Q52.

Can "abstract" keyword be used with constructor, Initialization Block, Instance Initialization and Static Initialization Block.

True

False

May be True or False

Can't Say

Discuss

Answer: (b).False

Q53.

Package in Java is a mechanism to encapsulate a ______________.

Classes

Sub Packages

Interfaces

All of the above

Discuss

Answer: (d).All of the above

Q54.

Package names and directory structure are closely related.

True

False

May be True or False

Can't Say

Discuss

Answer: (a).True

Q55.

An _______________ statement can be used to access the classes and interface of a different package from the current package.

instanceOf

import

extends

implement

Discuss

Answer: (b).import

Q56.

Which of the following packages is used to includes classes to create user interface like Button and Checkbox?

java.lang

java.net

java.awt

java.io

Discuss

Answer: (c).java.awt

Q57.

Which of the following packages is used to includes utility classes like Calendar, Collection, Date?

java.lang

java.net

java.awt

java.util

Discuss

Answer: (d).java.util

Q58.

Which of the following is the correct way of importing an entire package "pkg"?

import pkg.

Import pkg.

import pkg.*

Import pkg.*

Discuss

Answer: (c).import pkg.*

Q59.

Which of the following is false statement about package in java?

Packages are used for preventing naming conflicts

Providing controlled access: protected and default have package level access control.

Packages cannot be considered as data encapsulation

both a and c

Discuss

Answer: (c).Packages cannot be considered as data encapsulation

Q60.

Packages that are inside another package are the _________

packages

nested packages

util subpackages

subpackages

Discuss

Answer: (d).subpackages

Page 6 of 12

Welcome to the Interfaces and Packages MCQs Page

Interfaces and Packages MCQs | Page 6 of 12

Explore more Topics under Java Programming

Language Fundamentals

Data Types,Variables and Arrays

Operators and Control Statements

Classes and Methods

Inheritance

String Handling

java lang and java io

Serialization and Networking

java util

Exception Handling in Java

Multithreading

IO and Applets

Event Handling

Session Management,JSP and Servlet

Miscellaneous Topics in Java

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