No built-in int[] to List

The following creates a List<int[]> as if int[] were int[][]
Arrays.asList(int[])

Must:

      int[] ints = new int[] {1,2,3};
      final ArrayList<Integer> list = 
             new ArrayList<Integer>(ints.length);
      for (final int i : ints) {
        list.add(ints[i]); //autoboxing
      }
      return Collections.unmodifiableList(list);