convert array of int to arraylist java

int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
    intList.add(i);
}

Integer[] arr = new Integer[al.size()]; 
  
        // ArrayList to Array Conversion 
        for (int i = 0; i < al.size(); i++) 
            arr[i] = al.get(i); 

Integer[] arr = new Integer[al.size()]; 
for (int i = 0; i < al.size(); i++) 
     arr[i] = al.get(i); 

 Syntax: public static List asList(T... a)
// Returns a fixed-size List as of size of given array. 
// Element Type of List is of same as type of array element type.
// It returns an List containing all of the elements in this 
// array in the same order. 
// T represents generics