Java MCQ – Multiple Choice Questions and Answers – Data Types and Variables – Part 1
This collection of Java Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on “Java data types and variables”.
1. Java is a _________ language.
A dynamically typed
B weakly typed
C strongly typed
D medium typed
C
Java is a strongly typed programming language since each variable must be declared with a data type. A variable can’t get started without knowing the range of values it can contain, and once it is declared, the data type of the variable can’t change.
2. How many primitive data types are there in Java programming?
A 2
B 3
C 5
D 8
D
Primitive types are the most fundamental data types accessible in Java. There are 8 primitive data types: int, float, boolean, byte, char, short, long and double.
3. Size of int in java is ______
A 16 bit
B 32 bit
C 64 bit
D Relies on the execution environment
B
Size of int in java is 4 bytes = 2^4 = 32 bit.
4. Which is the smallest integer data type?
A int
B byte
C short
D long
B
The smallest integer data type is byte. Example:
System.out.println("Size of int: " + (Integer.SIZE/8) + " bytes.");
System.out.println("Size of byte: " + (Byte.SIZE/8) + " bytes.");
System.out.println("Size of short: " + (Short.SIZE/8) + " bytes.");
System.out.println("Size of long: " + (Long.SIZE/8) + " bytes.");
Output:
Size of int: 4 bytes. Size of byte: 1 bytes. Size of short: 2 bytes. Size of long: 8 bytes.
5. The smaller integer type is _______ and its size is __ bits.
A byte, 8
B byte, 1
C short, 8
D int, 4
A
The smaller integer type is byte and its size is 8 bits (1 byte = 8 bits).
6. Which is not a primitive data type in Java ?
A float
B enum
C double
D int
B
enum is not a primitive data type in Java
7. Integer Data type doesn’t incorporate following primitive data type ______.
A short
B byte
C long
D double
D
Integers includes following primitive data type: byte, short, int, and long.
8. Which data types go through floating data types ?
A int
B byte
C long
D double
D
Floating-point numbers includes float and double.
9. Character data type can’t store _______ value.
A Special Character
B Digit
C String
D Letter
C
Character data type can’t store String value.
10. What is the size of integer in Java?
A 1 Bytes
B 2 Bytes
C 4 Bytes
D 8 Bytes
C
The size of integer in Java is 4 Bytes.
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- Java MCQ – Collections – Part 3
- Java MCQ – Collections – Part 4
- Java MCQ – Interfaces – Part 1
- Java MCQ – Interfaces – Part 2
- Java MCQ – Multiple Choice Questions and Answers – Data Types and Variables – Part 1
- Java MCQ – Multiple Choice Questions and Answers – Data Types and Variables – Part 2
- Java MCQ – Multiple Choice Questions and Answers – Array – Part 1
- Java MCQ – Multiple Choice Questions and Answers – Array – Part 2
- Java MCQ – Multiple Choice Questions and Answers – Strings – Part 1
- Java MCQ – Multiple Choice Questions and Answers – Strings – Part 2
- Java MCQ – Multiple Choice Questions and Answers – Strings – Part 3
- Java MCQ – Multiple Choice Questions and Answers – Strings – Part 4
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