Welcome to the Data Types,Variables and Arrays MCQs Page

Dive deep into the fascinating world of Data Types,Variables and Arrays with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Types,Variables and Arrays, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Types,Variables and Arrays, 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 Data Types,Variables and Arrays. 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 Data Types,Variables and Arrays. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Types,Variables and Arrays MCQs | Page 30 of 32

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Q291.

What is the output of the below Java program?

int ages[3] = {25, 27, 30};
System.out.println(ages[1]);

Compile error

Discuss

Answer: (d).Compile error

Q292.

We should not specify the array size if declaration and initialization are done at the same time. (TRUE / FALSE)

FALSE

TRUE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (b).TRUE

Q293.

If an index of an element is N, what is its actual position in the array?

N-1

N+1

N+2

Discuss

Answer: (c).N+1

Q294.

An array in Java can be declared only of some predefined types. (TRUE/FALSE)

FALSE

TRUE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (a).FALSE

Q295.

The name of an array variable or identifier can start with ___.

A letter

Underscore ( _ )

Dollar Symbol ($)

All of the above

Discuss

Answer: (d).All of the above

Q296.

Shorthand array initialization in Java needs the keyword "new" to allocate memory to the array and elements. State TRUE or FALSE.

FALSE

TRUE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (a).FALSE

Q297.

Lazy initialization of array requires the keyword "new" to allocate memory to the array and its elements. State TRUE or FALSE.

FALSE

TRUE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (b).TRUE

Q298.

What is the default value of an element of Object type array?

null

-1

Garbage value

Discuss

Answer: (b).null

Q299.

What is the default value of byte, short, int or long data type elements of an array in Java?

-1

Garbage value

Discuss

Answer: (c).0

Q300.

What is the default value of float or double data type elements of an array in Java?

0.0

1.0

Discuss

Answer: (b).0.0

Page 30 of 32

Welcome to the Data Types,Variables and Arrays MCQs Page

Data Types,Variables and Arrays MCQs | Page 30 of 32

Explore more Topics under Java Programming

Language Fundamentals

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

Interfaces and Packages

Session Management,JSP and Servlet

Miscellaneous Topics in Java

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