[Solved] What will be the output of this Java code snippet?int[] arr = new int[3]; arr[0] = 7; arr[2] = 9; System.out.println(arr[1]); | Java

Java - Arrays

What will be the output of this Java code snippet?

int[] arr = new int[3];
arr[0] = 7;
arr[2] = 9;
System.out.println(arr[1]);

A0

B7

C9

DNullPointerException

Step-by-Step Solution

Solution:

Step 1: Understand default values in int arrays
When an int array is created, all elements are initialized to 0 by default.
Step 2: Check assigned values and printed index
arr[0] = 7, arr[2] = 9, but arr[1] is not assigned, so it remains 0.
Final Answer:
0 -> Option A
Quick Check:
Unassigned int array elements default to 0 [OK]

Quick Trick: Unassigned int array elements are zero by default [OK]

Common Mistakes:

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