Why is indexOf failing to find the object?

Question

I created an integer list and am trying to return the index of a specific value. The array is 3,8,2,5,1,4,7,6 and I want to return the indexOf(3), which should be 0.

Answer 1

Do it this way

Integer[] array = {3,8,2,5,1,4,7,9};
List list = Arrays.asList(array);

System.out.println(list.indexOf(8));

asList returns static List Where T cannot be primitive (int[]).