How Can I Efficiently Convert an int[] Array to a List in Java?

Seamless Conversion: Transforming int[] to List in Java

In Java, converting an int[] array to a List need not be a tedious manual process. For Java 8 users, the power of streams offers an elegant solution, bypassing the laborious item-by-item approach.

Unleashing the Power of Streams

1. Create an Int Stream: Begin by converting the int[] array into an IntStream instance using Arrays.stream() or IntStream.of().
2. Boxing Conversion: Utilize the IntStream#boxed() method to convert each primitive int value to its Integer object counterpart.
3. Collection into a List: Finally, leverage Stream.collect(Collectors.toList()) or, in Java 16 , simply call Stream#toList() to gather the boxed values into a List.

Example:

int[] ints = {1, 2, 3};
List<Integer> list = Arrays.stream(ints).boxed().collect(Collectors.toList());

Java 16 :

List<Integer> list = Arrays.stream(ints).boxed().toList();

And there you have it! With the magic of streams, you can effortlessly convert int[] arrays into List collections, leaving behind the arduous loop-based approach.

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