Java 60 MCQS Question paper Online Test Series 5251

Java MCQ question Paper Basic To Advanced

1 / 60

default case in switch is:

Optional

Mandatory

2 / 60

To get array length:

arr.size()

length(arr)

arr.length

Alm(544)

3 / 60

Which loop executes fixed number of times?

All of the above

do-while

for

while

4 / 60

Which performs multiplication?

mul

5 / 60

Syntax of if statement:

if:condition

if(condition){ }

None

if{condition}( )

6 / 60

Which is the assignment operator?

7 / 60

Which declares an integer variable correctly?

var int;

num int;

integer num;

int num;

8 / 60

Strings are ______ in Java.

Immutable

Mutable

9 / 60

!(5 == 5) results in:

true

false

10 / 60

Comments are used for:

Execution

Debugging only

Errors

Documentation

11 / 60

System.out.println(“A”+”B”); prints:

A B

Error

A+B

12 / 60

Variables store ______.

Keywords

Classes

Data values

Operators

13 / 60

Static variables are shared by ______.

One object only

All objects

One method

None

14 / 60

Random number function:

random.Math()

rand()

Math.rand()

Math.random()

15 / 60

Boolean type holds:

true or false

‘T’ or ‘F’

1 or 0

Yes or No

16 / 60

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

start()

main()

run()

init()

17 / 60

What does System.out.print() do?

Prints without newline

Prints with newline

Stops program

Reads input

18 / 60

Which requires explicit cast?

Narrowing

Widening

19 / 60

Who is known as the father of Java?

Guido van Rossum

Dennis Ritchie

James Gosling

Bjarne Stroustrup

20 / 60

Type of Margin in notepad ?

21 / 60

Default value of an int variable is:

null

undefined

22 / 60

Which package is required for Scanner?

java.io.*

java.lang.*

java.scanner.*

java.util.*

23 / 60

Java is a ______ language.

Interpreted

None

Compiled

Both

24 / 60

Which is widening conversion?

int → double

long → short

float → byte

double → int

25 / 60

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

Valid

Invalid

26 / 60

Infinite loop example:

for(;;)

while(true)

27 / 60

Default value of boolean is:

false

true

null

28 / 60

What executes when if condition is false?

else block

if block

29 / 60

Size of double type is:

8 bytes

2 bytes

16 bytes

4 bytes

30 / 60

Which keyword defines a class?

object

Class

define

class

31 / 60

Nested if means:

Multiple ifs inside another if

Only one if

32 / 60

Java was developed by ______.

Sun Microsystems

Apple

Microsoft

Oracle

33 / 60

Math.pow(2,4) equals:

34 / 60

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

println()

output()

print()

write()

35 / 60

Identifiers in Java are ______.

Case-insensitive

Non-sensitive

Numeric

Case-sensitive

36 / 60

Array index starts from:

37 / 60

switch works with:

int, char, String

float

double

boolean only

38 / 60

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

10Java

Error

55Java

Java10

39 / 60

Increment operator is:

inc

40 / 60

Which of these is correct syntax?

System.out.println("Hi");

println("Hi");

system.out.println("Hi");

echo("Hi");

41 / 60

Syntax of for loop:

for(init; condition; update)

for(init; update; condition)

for(condition; init; update)

All Of the above

42 / 60

Every case label must end with:

;

break;

stop;

exit;

43 / 60

Math.sqrt(25) returns:

Error

44 / 60

Java statements end with a ______.

Period

Semicolon

Comma

Colon

45 / 60

Boolean can store:

Yes/No

T/F

true/false

1/0

46 / 60

Math.abs(-8) returns:

Error

-8

47 / 60

The extension of Java source files is ______.

.jav

.class

.java

.jar

48 / 60

Which is not a primitive type?

int

float

String

char

49 / 60

To find length of a String:

size(str)

str.count()

str.size()

str.length()

50 / 60

for loop repeats until:

Condition is true

Condition is false

51 / 60

Java is ______ typed.

Dynamically

Weakly

Loosely

Statically

52 / 60

String class belongs to package:

java.string

java.io

java.util

java.lang

53 / 60

Converting one data type into another is called:

Evaluation

Typecasting

Promotion

Conversion

54 / 60

Logical AND is:

55 / 60

The modulus operator is:

56 / 60

Multi-line comments start with:

/**

57 / 60

Correct declaration:

array arr[] = new int;

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

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

new array[3];

58 / 60

To compare two strings:

compare()

match()

equals()

59 / 60

Single-line comments use:

<!– –>

/* */

60 / 60

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

true

true/false

false

false/true

Your score is

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