Java 60 MCQS Question paper Online Test Series 5251

Java MCQ question Paper Basic To Advanced

1 / 60

switch works with:

float

boolean only

double

int, char, String

2 / 60

What executes when if condition is false?

else block

if block

3 / 60

Nested if means:

Only one if

Multiple ifs inside another if

4 / 60

The modulus operator is:

5 / 60

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

init()

start()

main()

run()

6 / 60

Java was developed by ______.

Sun Microsystems

Apple

Oracle

Microsoft

7 / 60

Which requires explicit cast?

Widening

Narrowing

8 / 60

Correct declaration:

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

array arr[] = new int;

new array[3];

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

9 / 60

Array index starts from:

10 / 60

To compare two strings:

match()

compare()

equals()

11 / 60

Syntax of for loop:

for(init; condition; update)

All Of the above

for(init; update; condition)

for(condition; init; update)

12 / 60

default case in switch is:

Optional

Mandatory

13 / 60

Multi-line comments start with:

/**

14 / 60

Which loop executes fixed number of times?

do-while

while

for

All of the above

15 / 60

Java is a ______ language.

Compiled

Both

Interpreted

None

16 / 60

To find length of a String:

size(str)

str.size()

str.count()

str.length()

17 / 60

Converting one data type into another is called:

Evaluation

Promotion

Typecasting

Conversion

18 / 60

Syntax of if statement:

if:condition

if(condition){ }

None

if{condition}( )

19 / 60

Default value of an int variable is:

null

undefined

20 / 60

Infinite loop example:

while(true)

for(;;)

21 / 60

Boolean can store:

1/0

Yes/No

true/false

T/F

22 / 60

Identifiers in Java are ______.

Case-sensitive

Numeric

Case-insensitive

Non-sensitive

23 / 60

What does System.out.print() do?

Reads input

Prints without newline

Prints with newline

Stops program

24 / 60

Random number function:

random.Math()

Math.random()

rand()

Math.rand()

25 / 60

Which keyword defines a class?

class

Class

define

object

26 / 60

Static variables are shared by ______.

One method

All objects

None

One object only

27 / 60

Comments are used for:

Documentation

Errors

Execution

Debugging only

28 / 60

Java is ______ typed.

Statically

Weakly

Dynamically

Loosely

29 / 60

!(5 == 5) results in:

false

true

30 / 60

Who is known as the father of Java?

James Gosling

Dennis Ritchie

Guido van Rossum

Bjarne Stroustrup

31 / 60

Java statements end with a ______.

Semicolon

Colon

Comma

Period

32 / 60

Math.pow(2,4) equals:

33 / 60

Logical AND is:

34 / 60

Which of these is correct syntax?

println("Hi");

System.out.println("Hi");

echo("Hi");

system.out.println("Hi");

35 / 60

String class belongs to package:

java.string

java.lang

java.util

java.io

36 / 60

Size of double type is:

8 bytes

2 bytes

16 bytes

4 bytes

37 / 60

Default value of boolean is:

true

false

null

38 / 60

Every case label must end with:

stop;

exit;

break;

;

39 / 60

Math.abs(-8) returns:

-8

Error

40 / 60

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

false/true

true

true/false

false

41 / 60

Strings are ______ in Java.

Mutable

Immutable

42 / 60

To get array length:

arr.length

length(arr)

Alm(544)

arr.size()

43 / 60

Boolean type holds:

true or false

‘T’ or ‘F’

1 or 0

Yes or No

44 / 60

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

Error

Java10

10Java

55Java

45 / 60

Type of Margin in notepad ?

46 / 60

The extension of Java source files is ______.

.jav

.class

.jar

.java

47 / 60

Which is the assignment operator?

48 / 60

Single-line comments use:

<!– –>

/* */

49 / 60

Which declares an integer variable correctly?

int num;

num int;

var int;

integer num;

50 / 60

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

Valid

Invalid

51 / 60

for loop repeats until:

Condition is true

Condition is false

52 / 60

Which performs multiplication?

mul

53 / 60

Variables store ______.

Keywords

Operators

Classes

Data values

54 / 60

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

print()

write()

println()

output()

55 / 60

Which is widening conversion?

long → short

double → int

int → double

float → byte

56 / 60

Increment operator is:

inc

57 / 60

System.out.println(“A”+”B”); prints:

Error

A B

A+B

58 / 60

Math.sqrt(25) returns:

Error

59 / 60

Which is not a primitive type?

String

char

int

float

60 / 60

Which package is required for Scanner?

java.io.*

java.scanner.*

java.lang.*

java.util.*

Your score is

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