Java 60 MCQS Question paper Online Test Series 5251

Java MCQ question Paper Basic To Advanced

1 / 60

Single-line comments use:

<!– –>

/* */

2 / 60

Java statements end with a ______.

Colon

Period

Comma

Semicolon

3 / 60

What does System.out.print() do?

Reads input

Prints without newline

Prints with newline

Stops program

4 / 60

Correct declaration:

new array[3];

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

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

array arr[] = new int;

5 / 60

Default value of boolean is:

false

null

true

6 / 60

Which loop executes fixed number of times?

for

do-while

All of the above

while

7 / 60

Infinite loop example:

while(true)

for(;;)

8 / 60

Which of these is correct syntax?

echo("Hi");

system.out.println("Hi");

println("Hi");

System.out.println("Hi");

9 / 60

What executes when if condition is false?

else block

if block

10 / 60

Java is a ______ language.

Both

None

Interpreted

Compiled

11 / 60

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

Valid

Invalid

12 / 60

To get array length:

arr.size()

Alm(544)

length(arr)

arr.length

13 / 60

Comments are used for:

Errors

Execution

Debugging only

Documentation

14 / 60

Which requires explicit cast?

Widening

Narrowing

15 / 60

To find length of a String:

str.count()

size(str)

str.size()

str.length()

16 / 60

Java was developed by ______.

Apple

Microsoft

Oracle

Sun Microsystems

17 / 60

Every case label must end with:

stop;

exit;

break;

;

18 / 60

Type of Margin in notepad ?

19 / 60

Which package is required for Scanner?

java.util.*

java.lang.*

java.io.*

java.scanner.*

20 / 60

Which is the assignment operator?

21 / 60

Random number function:

Math.random()

random.Math()

Math.rand()

rand()

22 / 60

Math.pow(2,4) equals:

23 / 60

Which performs multiplication?

mul

24 / 60

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

init()

main()

start()

run()

25 / 60

Which keyword defines a class?

class

Class

object

define

26 / 60

String class belongs to package:

java.string

java.util

java.io

java.lang

27 / 60

Syntax of if statement:

if:condition

if{condition}( )

None

if(condition){ }

28 / 60

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

println()

write()

output()

print()

29 / 60

Size of double type is:

4 bytes

8 bytes

2 bytes

16 bytes

30 / 60

Increment operator is:

inc

31 / 60

Nested if means:

Multiple ifs inside another if

Only one if

32 / 60

!(5 == 5) results in:

true

false

33 / 60

Array index starts from:

34 / 60

for loop repeats until:

Condition is false

Condition is true

35 / 60

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

false

true/false

false/true

true

36 / 60

To compare two strings:

match()

compare()

equals()

37 / 60

The modulus operator is:

38 / 60

System.out.println(“A”+”B”); prints:

Error

A+B

A B

39 / 60

Which is not a primitive type?

int

char

String

float

40 / 60

Converting one data type into another is called:

Evaluation

Typecasting

Promotion

Conversion

41 / 60

switch works with:

int, char, String

boolean only

double

float

42 / 60

Logical AND is:

43 / 60

Identifiers in Java are ______.

Case-sensitive

Case-insensitive

Non-sensitive

Numeric

44 / 60

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

Error

Java10

55Java

10Java

45 / 60

Math.abs(-8) returns:

-8

Error

46 / 60

Math.sqrt(25) returns:

Error

47 / 60

The extension of Java source files is ______.

.class

.java

.jar

.jav

48 / 60

Variables store ______.

Operators

Keywords

Data values

Classes

49 / 60

Java is ______ typed.

Loosely

Weakly

Dynamically

Statically

50 / 60

Boolean type holds:

Yes or No

true or false

1 or 0

‘T’ or ‘F’

51 / 60

Syntax of for loop:

for(init; condition; update)

for(init; update; condition)

for(condition; init; update)

All Of the above

52 / 60

Strings are ______ in Java.

Immutable

Mutable

53 / 60

Which declares an integer variable correctly?

num int;

var int;

integer num;

int num;

54 / 60

Default value of an int variable is:

null

undefined

55 / 60

Which is widening conversion?

long → short

float → byte

int → double

double → int

56 / 60

Boolean can store:

1/0

true/false

Yes/No

T/F

57 / 60

Who is known as the father of Java?

Guido van Rossum

Dennis Ritchie

Bjarne Stroustrup

James Gosling

58 / 60

Multi-line comments start with:

/**

59 / 60

Static variables are shared by ______.

All objects

One object only

None

One method

60 / 60

default case in switch is:

Mandatory

Optional

Your score is

Related Posts