Java 60 MCQS Question paper Online Test Series 5251

Java MCQ question Paper Basic To Advanced

1 / 60

Size of double type is:

4 bytes

16 bytes

2 bytes

8 bytes

2 / 60

The modulus operator is:

3 / 60

Infinite loop example:

for(;;)

while(true)

4 / 60

Converting one data type into another is called:

Promotion

Evaluation

Typecasting

Conversion

5 / 60

Syntax of for loop:

for(init; update; condition)

All Of the above

for(init; condition; update)

for(condition; init; update)

6 / 60

Math.abs(-8) returns:

-8

Error

7 / 60

Syntax of if statement:

None

if:condition

if{condition}( )

if(condition){ }

8 / 60

Default value of boolean is:

true

false

null

9 / 60

Nested if means:

Multiple ifs inside another if

Only one if

10 / 60

Java statements end with a ______.

Period

Colon

Semicolon

Comma

11 / 60

System.out.println(“A”+”B”); prints:

A+B

A B

Error

12 / 60

Correct declaration:

arr int[] = {1,2,3};

array arr[] = new int;

new array[3];

int arr[] = {1,2,3};

13 / 60

The extension of Java source files is ______.

.jav

.class

.java

.jar

14 / 60

The entry point of any Java program is the ______ method.

main()

init()

start()

run()

15 / 60

Which is widening conversion?

long → short

float → byte

double → int

int → double

16 / 60

Which keyword defines a class?

Class

define

class

object

17 / 60

Every case label must end with:

;

exit;

stop;

break;

18 / 60

Which requires explicit cast?

Narrowing

Widening

19 / 60

Boolean can store:

true/false

Yes/No

T/F

1/0

20 / 60

Output of System.out.println(5+5+”Java”);

Error

55Java

10Java

Java10

21 / 60

double x = 9.8; int y = (int)x;

Valid

Invalid

22 / 60

Random number function:

Math.random()

rand()

Math.rand()

random.Math()

23 / 60

What does System.out.print() do?

Reads input

Stops program

Prints without newline

Prints with newline

24 / 60

Java is ______ typed.

Dynamically

Weakly

Loosely

Statically

25 / 60

Strings are ______ in Java.

Immutable

Mutable

26 / 60

Who is known as the father of Java?

Bjarne Stroustrup

Dennis Ritchie

Guido van Rossum

James Gosling

27 / 60

String class belongs to package:

java.util

java.io

java.string

java.lang

28 / 60

Logical AND is:

29 / 60

To find length of a String:

str.count()

str.size()

size(str)

str.length()

30 / 60

Type of Margin in notepad ?

31 / 60

Java is a ______ language.

Both

Compiled

Interpreted

None

32 / 60

Which is the assignment operator?

33 / 60

Which is not a primitive type?

float

int

char

String

34 / 60

Static variables are shared by ______.

None

One object only

All objects

One method

35 / 60

Which of these is correct syntax?

echo("Hi");

println("Hi");

System.out.println("Hi");

system.out.println("Hi");

36 / 60

Array index starts from:

37 / 60

Which performs multiplication?

mul

38 / 60

Comments are used for:

Debugging only

Documentation

Execution

Errors

39 / 60

Increment operator is:

inc

40 / 60

Variables store ______.

Operators

Classes

Keywords

Data values

41 / 60

for loop repeats until:

Condition is false

Condition is true

42 / 60

Java was developed by ______.

Microsoft

Sun Microsystems

Apple

Oracle

43 / 60

!(5 == 5) results in:

true

false

44 / 60

Which package is required for Scanner?

java.scanner.*

java.io.*

java.util.*

java.lang.*

45 / 60

Which method prints a line and moves to the next line?

println()

print()

write()

output()

46 / 60

default case in switch is:

Mandatory

Optional

47 / 60

(10 > 5) && (2 < 4) returns:

true/false

true

false

false/true

48 / 60

Multi-line comments start with:

/**

49 / 60

Which loop executes fixed number of times?

while

do-while

All of the above

for

50 / 60

Math.pow(2,4) equals:

51 / 60

Default value of an int variable is:

null

undefined

52 / 60

What executes when if condition is false?

if block

else block

53 / 60

Single-line comments use:

<!– –>

/* */

54 / 60

Which declares an integer variable correctly?

integer num;

int num;

var int;

num int;

55 / 60

Math.sqrt(25) returns:

Error

56 / 60

To compare two strings:

equals()

match()

compare()

57 / 60

To get array length:

arr.size()

length(arr)

Alm(544)

arr.length

58 / 60

Identifiers in Java are ______.

Case-insensitive

Case-sensitive

Numeric

Non-sensitive

59 / 60

switch works with:

boolean only

int, char, String

float

double

60 / 60

Boolean type holds:

‘T’ or ‘F’

true or false

1 or 0

Yes or No

Your score is

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