[Solved] Given an array of primitive ints, how can you convert it to a list of Integer objects efficiently? — Ans: Use a loop to add each int to a List<Integer> with autoboxing | Java

Java - Wrapper Classes

Given an array of primitive ints, how can you convert it to a list of Integer objects efficiently?

AUse Arrays.asList() directly on the int array

BAssign the int array directly to List<Integer>

CUse a loop to add each int to a List<Integer> with autoboxing

DCast the int array to Integer[]

Step-by-Step Solution

Solution:

Step 1: Understand array to list conversion
Primitive arrays cannot be directly converted to List<Integer> because of type mismatch.
Step 2: Identify correct method
Using a loop to add each int element to a List<Integer> uses autoboxing and works efficiently.
Final Answer:
Use a loop to add each int to a List<Integer> with autoboxing -> Option C
Quick Check:
Loop + autoboxing converts int[] to List<Integer> [OK]

Quick Trick: Use loop with autoboxing to convert int[] to List [OK]

Common Mistakes:

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Given an array of primitive ints, how can you convert it to a list of Integer objects efficiently?