Array -Java Programming MCQ Questions and Answers

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41.
What would be the result of attempting to compile and run the following code?
public class HelloWorld{
      public static void main(String[] args){
            double[] x = new double[]{1, 2, 3};
            System.out.println("Value is " + x[1]);
      }
}

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42.
Which will legally declare, construct, and initialize an array?

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43.
What will be the output of the program?
public class Test{
      public static void main(String [] args){
            String s1 = args[1];
            String s2 = args[2];
            String s3 = args[3];
            String s4 = args[4];
            System.out.print(" args[2] = " + s2);
      }
}

and the command-line invocation is C:Java> java Test 1 2 3 4

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44.
What is the value of a[1] after the following code is executed?
int[] a = {0, 2, 4, 1, 3};
for(int i = 0; i < a.length; i++)
a[i] = a[(a[i] + 3) % a.length];

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45.
Predict the output:
public class Test{
public static void main(String... args){
            int[] index = new int[5];
            System.out.println(index instanceof Object);
      }
}

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49.
What will be the output of the following Java code?
class array_output 
{
    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++;
        }
    } 
}

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50.
What will be the output of the following Java code?
class evaluate 
{
    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.println(arr[n] / 2);
        } 
}

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