Java objective question for written Test | Java written test objective question

                               Java objective question
All the best important question
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1.

Answer: Illegal combination of final and abstract class

2.

Answer: 4

3.

Answer:  error: bad operand types for binary operator '=='

                System.out.println("Helo"+10==10);

4.

Answer:  error: integer number too large

                System.out.println(08);

Q5.

====

 class Nit {

public static void main(String[] args) {

m1(2);

}

public static void m1(int i) {

if (i >= 0) {

m1(i - 1);

}

System.out.println(" " + i);

}}

output:

 -1

 0

 1

 2

==================================

Q.2

------

 Question 2: What will be the output of this program:

public class nit1 {

public static void main(String args[]) {

int array[] = new int[10];

for (int i = 0; i < 10; ++i) {

array[i] = i;

System.out.print(array[i] + " ");

i++;

} }}

Output:

0,2,4,6,8

================================

Q.3

Question 3: What will be the output of this program:

public class Array {

public static void main(String args[]) {

int array[][] = new int[3][];

array[0] = new int[1];

array[1] = new int[2];

array[2] = new int[3];

int sum = 1;

for (int i = 0; i < 3; ++i)

for (int j = 0; j < i + 1; ++j)

array[i][j] = j + 1;

for (int i = 0; i < 3; ++i)

for (int j = 0; j < i + 1; ++j)

sum += array[i][j];

System.out.print(sum);

}

}

Output:

  11

  ===============================

Q.4

Question 4: What will be the output of this program:

public class Array1 {

public static void main(String args[]) {

char array[] = new char[10];

for (int i = 0; i < 10; ++i) {

array[i] = 'i' + 5;

System.out.print(array[i] + "");

}}}

A) 1 2 3 4 5 6 7 8 9 10  B) 0 1 2 3 4 5 6 7 8 9 10

C) i i i i i i i i i i  D)None Of These

Output:  nnnnnnnnnnnnnnnnnnnnnn

==========================

Q.5

Question 5: What will be the output of this program:

import java.util.*;

public class array2 {

public static void main(String args[]) {

int[] inputArr = { 0, 10, 43, 27, 0, 59, 191, 0 };

int counter = 0;

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

if (inputArr[i] != 0) {

inputArr[counter] = inputArr[i];

counter++;

}}

while (counter < inputArr.length) {

inputArr[counter] = 0;

counter++;

}

System.out.println(Arrays.toString(inputArr));

}}

Output:

[10, 43, 27, 59, 191, 0, 0, 0]

Q.6

============================

Question 6: What will be the output of this program:

public class string {

public static void main(String[] args) {

String s1 = new String("hello");

String s2 = new String("helloW");

System.out.println(s1 = s2);

}}

A) True  B)False   C)HelloW   D)hello

Output:

  hellow

=================================

Question 7: What will be the output of this program:

public class string {

public static void main(String[] args) {

String s1 = new String("hello");

String s2 = new String(s2);

System.out.println(s1 == s2);

}

}

A) False   B)True   C) 0   D)CE

Output:

  Variable s2 might be initialized Compile-time error

===============================

Question 8: What will be the output of this program:

public class string {

public static void main(String[] args) {

String s1 = "hello";

String s2 = "hello";

System.out.print(s1 == s2);

System.out.print(" " + s1.equals(s2));

}

A)  False True     B)False False     C)  True True    D)True  False

Output:

  true  true

==================================

Question 9: What will be the output of this program:

public class string {

public static void main(String[] args) {

String s1 = "hello";

String s2 = "hello";

System.out.print(s1.charAt(0) > s2.charAt(0));

}

}

A)  False             B)True                C)  0               D)CE

Output:

  False

==================================

Question 10: What will be the output of this program:

public class string {

public static void main(String[] args) {

String s1 = "hello";

int i2 = 9;

System.out.print(s1 + i2);

}

}

A)  CE            B)True                C)  False              D)hello9      E)9hello

Output: hello9