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 23 of 32

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Q221.

An Octal number is Java is represented with a leading ____?

O (Alphabet)

0 (ZERO)

Discuss

Answer: (b).0 (ZERO)

Q222.

Choose correct ranges for Decimal, Octal and Hexadecimal numbers in Java?

Decimal: 0 to 9

Octal: 0 to 7

Hexadecimal: 0 to 9 and A to F / a to f

All of the above

Discuss

Answer: (d).All of the above

Q223.

Choose the correct example of Octal Literal in Java?

short = 0564;

int = 076__45_2;

int = 0______11;

All of the above

Discuss

Answer: (d).All of the above

Q224.

What is the prefix used to represent Hexadecimal numbers in Java?

both a and b

None of the above

Discuss

Answer: (d).None of the above

Q225.

Choose correct examples of Hexadecimal literals in Java?

long a = 0X987654321L;

int a = 0x76FE____23;

byte b = 0X0__________F;

All of the above

Discuss

Answer: (d).All of the above

Q226.

Binary literals in Java are introduced with which version of Java?

JDK 5

JDK 6

JDK 8

Discuss

Answer: (c).JDK 6

Q227.

Underscore symbols in literal numbers are introduced with which version of Java?

JDK 5

JDK 6

JDK 7

JDK 8

Discuss

Answer: (c).JDK 7

Q228.

What is the prefix used to represent Binary literals in Java?

b or B

0b or 0B

xB or xb

ob or oB

Discuss

Answer: (b).0b or 0B

Q229.

What is the correct representation of using Binary literals in Java?

int a = 0b1010;

int a = 0B1011_1010;

int a = 0B0______________1;

All of the above

Discuss

Answer: (d).All of the above

Q230.

What is the compiler error for improperly using Underscores ( _ ) in literals in Java?

Underscores are out of range

IllegalUnderscoresException

Underscores have to be located within digits

Too many Underscores

Discuss

Answer: (c).Underscores have to be located within digits

Page 23 of 32

Welcome to the Data Types,Variables and Arrays MCQs Page

Data Types,Variables and Arrays MCQs | Page 23 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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