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What will be the output?public class Test{ public static void main(String[] args){ int[] a = new int[4]; a[1] = 1; a = new int[2]; System.out.println("a[1] is " + a[1]); }}

Question

What will be the output?public class Test{ public static void main(String[] args){ int[] a = new int[4]; a[1] = 1; a = new int[2]; System.out.println("a[1] is " + a[1]); }}

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Solution

The output will be "a[1] is 0".

Here's the step by step explanation:

  1. An array 'a' of size 4 is created. By default, all elements in an integer array are initialized to 0 in Java. So, the array 'a' looks like this: [0, 0, 0, 0].

  2. The second element of the array (index 1) is set to 1. Now, the array 'a' looks like this: [0, 1, 0, 0].

  3. A new array 'a' of size 2 is created. This new array 'a' is completely separate from the previous array 'a'. All elements in this new array are also initialized to 0. So, the new array 'a' looks like this: [0, 0].

  4. The second element of the new array 'a' (index 1) is printed. Since this element is 0, "a[1] is 0" is printed.

This problem has been solved

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