Java Data Types and Variables - MCQ - Quiz

Q: How many primitive data types are there in Java?

A. 6
B. 7
C. 8
D. 9

Correct Option: C
Remarks:

Explanation: 8

Q: The smallest integer type is_ and its size is_bits.

A. short, 8
B. byte, 8
C. short, 16
D. short, 16

Correct Option: B
Remarks:

Explanation: byte, 8

Q: The following fraction of code

double STATIC = 2.5 ;
System.out.println( STATIC );

A. Prints 2.5
B. Rraises an error as STATIC is used as a variable which is a keyword
C. Raises an exception
D. None of these

Correct Option: A
Remarks:

Explanation: Prints 2.5

Q: In Java, the word true is ................

A. A Java keyword
B. A Boolean literal
C. Same as value 1
D. Same as value 0

Correct Option: B
Remarks:

Explanation: A Boolean literal

Q: Which of the following data types comes under floating data types ?

A. byte
B. double
C. long
D. int

Correct Option: B
Remarks:

Explanation: double

Q: Default value of character data type in Java Programming is ___________________.

A. '\u0000'
B. undefine
C. null

Correct Option: A
Remarks:

Explanation: '\u0000'

Q: "Accessing an uninitialized local variable will result in a compile-time error in Java Programming"

A. False Statement
B. True Statement

Correct Option: B
Remarks:

Explanation: True Statement

Q: Which of the following data type is not considered as data type in Java Programming.

A. char
B. boolean
C. String
D. int

Correct Option: C
Remarks:

Explanation: The String class is not technically a primitive data type, but considering the special support given to it by the language,

Q: Guess the output of the following program -

public class NumberSystem{
    public static void main(String[] args){
        
        int hexVal = 0x1a;
        System.out.println("Value : " + hexVal);
        
    }
}

A. 32
B. 24
C. 26
D. 25

Correct Option: C
Remarks:

Explanation:

0x1a = 0001 1010
     = 2^1 + 2^3 + 2^4
     = 2 + 8 + 16
     = 26

Q: Guess the output of the following program -

public class NumberSystem{
    public static void main(String[] args){

        int val = 0b11010;
        System.out.println("Value : " + val);

    }
}

A. 32
B. 26
C. 28
D. 64

Correct Option: B
Remarks:

Explanation: Its binary representation of 26. Binary Literal is accepted in latest JDK 7.

Java Data Types and Variables - MCQ - Quiz

How many primitive data types are there in Java?

The smallest integer type is_ and its size is_bits.

The following fraction of code
double STATIC = 2.5 ; System.out.println( STATIC );

In Java, the word true is ................

Which of the following data types comes under floating data types ?

Default value of character data type in Java Programming is ___________________.

"Accessing an uninitialized local variable will result in a compile-time error in Java Programming"

Which of the following data type is not considered as data type in Java Programming.

Guess the output of the following program -
public class NumberSystem{ public static void main(String[] args){ int hexVal = 0x1a; System.out.println("Value : " + hexVal); } }

Guess the output of the following program -
public class NumberSystem{ public static void main(String[] args){ int val = 0b11010; System.out.println("Value : " + val); } }

Java Data Types and Variables - MCQ - Quiz

How many primitive data types are there in Java?

The smallest integer type is___________ and its size is___________bits.

The following fraction of code double STATIC = 2.5 ; System.out.println( STATIC );

In Java, the word true is ................

Which of the following data types comes under floating data types ?

Default value of character data type in Java Programming is ___________________.

"Accessing an uninitialized local variable will result in a compile-time error in Java Programming"

Which of the following data type is not considered as data type in Java Programming.

Guess the output of the following program - public class NumberSystem{ public static void main(String[] args){ int hexVal = 0x1a; System.out.println("Value : " + hexVal); } }

Guess the output of the following program - public class NumberSystem{ public static void main(String[] args){ int val = 0b11010; System.out.println("Value : " + val); } }

The smallest integer type is_ and its size is_bits.

The following fraction of code
double STATIC = 2.5 ; System.out.println( STATIC );

Guess the output of the following program -
public class NumberSystem{ public static void main(String[] args){ int hexVal = 0x1a; System.out.println("Value : " + hexVal); } }

Guess the output of the following program -
public class NumberSystem{ public static void main(String[] args){ int val = 0b11010; System.out.println("Value : " + val); } }