Java Programming MCQ Questions - Array

11. What will be the output of the program?

class Main
{
public static void main(String args[]) {
		int arr[] = {10, 20, 30, 40, 50};
		for(int i=0; i < arr.length; i++)
		{
			System.out.print(" " + arr[i]);
		}
	}
}

A. 10 20 30 40 50
B. Compiler Error
C. 10 20 30 40
D. None of the above

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12. What will be the output of the program?

  
int arr[] = new int [5];
System.out.print(arr);

A. 0
B. value stored in arr[0].
C. 0
D. Class name@ hashcode in hexadecimal form

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13. What will be the output of the program?

class Main
{
public static void main(String args[])
	{
		int array_variable [] = new int[10];
		for (int i = 0; i < 10; ++i)
		{
			array_variable[i] = i;
			System.out.print(array_variable[i] + " ");
			i++;
		}
	}
}

A. 0 2 4 6 8
B. 1 3 5 7 9
C. 0 1 2 3 4 5 6 7 8 9
D. 1 2 3 4 5 6 7 8 9 10

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14. What will be output for the following code?

class Main
{
public static void main(String args[])
	{
		int arr[] = new int[] {0 , 1, 2, 3, 4, 5, 6, 7, 8, 9};
		int n = 6;
		n = arr[arr[n] / 2];
		System.out.print(n);
	}	
}

A. 3
B. 0
C. 6
D. 1

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15. Predict the output of following Java Program?

class Main
{
 public static void main(String args[])
	{
		char array_variable [] = new char[10];
		for (int i = 0; i < 10; ++i)
		{
			array_variable[i] = 'i';
			System.out.print(array_variable[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 j k l m n o p q r
D. i i i i i i i i i i

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16. What will be output for the following code?

  
class Test {
	public static void main(String args[]) {
		int arr[2];
		System.out.println(arr[0]);
		System.out.println(arr[1]);
	}
}

A. 0 0
B. garbage value garbage value
C. Compiler Error
D. Exception

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17. What will be output for the following code?

  
class Test {
	public static void main(String args[]) {
		int arr[] = new int[2];
		System.out.println(arr[0]);
		System.out.println(arr[1]);
	}
}

A. 0 0
B. garbage value garbage value
C. Compiler Error
D. Exception

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18. What will be output for the following code?

  
class array_output
{
	public static void main(String args[])
	{
		int array_variable[][] = {{ 1, 2, 3}, { 4 , 5, 6}, { 7, 8, 9}};
		int sum = 0;
		for (int i = 0; i < 3; ++i)
		for (int j = 0; j < 3 ; ++j)
			sum = sum + array_variable[i][j];
		System.out.print(sum / 5);
	}
}

A. 8
B. 9
C. 10
D. 11

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19. What will be the output of the program?

class Main
{
 public static void main (String[] args)
	{
		int arr1[] = {1, 2, 3};
		int arr2[] = {1, 2, 3};
		if (arr1 == arr2)
			System.out.println("Same");
		else
			System.out.println("Not same");
	}
}

A. Same
B. Not Same
C. Compiler error
D. None of the above

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20. What is the output of this program?

class Main
{
public static void main (String[] args)
	{
		int arr1[] = {1, 2, 3};
		int arr2[] = {1, 2, 3};
		if (arr1.equals(arr2))
			System.out.println("Same");
		else
			System.out.println("Not same");
	}
}

A. Same
B. Not Same
C. Compiler error
D. None of the above

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