Number of primitive data types in Java are?

• 6

• 7

• 8

• 9

What is the size of float and double in java?

• 32 and 64

• 32 and 32

• 64 and 64

• 64 and 32

Find the output of the following code:

int Integer = 24;

char String = ‘I’;

System.out.print(Integer);

System.out.print(String);

• compile error

• throws exception

• I

• 24 I

Find the output of the following program:

public class Solution{

public static void main(String[] args){

short x = 10;

x = x * 5;

System.out.print(x); } }

• 50

• 10

• compile error

• exception

Find the output of the following program:

public class Solution{

public static void main(String[] args){

byte x = 127;

x++;

x++;

System.out.print(x); } }

• -127

• 127

• 129

• 2

Find the output of the following program.

public class Solution{

public static void main(String[] args){

int[] x = {120, 200, 016};

for(int i = 0; i < x.length; i++){

System.out.print(x[i] + “ “); } } }

• 120 200 016

• 120 200 14

• 120 200 16

• none

Find the value of A[1] after execution of the following program.

int[] A = {0,2,4,1,3};

for(int i = 0; i < a.length; i++){

a[i] = a[(a[i] + 3) % a.length]; }

• 0

• 1

• 2

• 3

Identify what can directly access and change the value of the variable res.

Package com.mypackage;

Public class Solution{

Private int res = 100; }

• any class

• only solution class

• any class that extends solution

• none

Identify the output of the following program.

String str = “abcde”;

System.out.println(str.substring(1, 3));

• abc

• bc

• bcd

• cd

Identify the output of the following program.

Public class Test{

Public static void main(String argos[]){

String str1 = “one”;

String str2 = “two”;

System.out.println(str1.concat(str2)); } }

• one

• two

• onetwo

• twoone