Java - A method that takes vararg and returns arraylist?

Question

I'm not entirely comfortable with generics and thus haven't found a solution to this yet. I have these three methods:

public static List<ObjectA> objectAAsList(ObjectA ... items) {
    return new ArrayList<>(Arrays.asList(items));
}

public static List<ObjectB> objectBAsList(ObjectB ... items) {
    return new ArrayList<>(Arrays.asList(items));
}

public static List<ObjectC> objectCAsList(ObjectC ... items) {
    return new ArrayList<>(Arrays.asList(items));
}

How can I create a single method that takes a vararg of T (or something) and creates an ArrayList of it?

Answer 1

Just replace your type with a type variable:

public static <T> List<T> genericAsList(T ... items) {
    return new ArrayList<>(Arrays.asList(items));
}

Note that you could look at how Arrays.asList is declared, since it does largely the same thing, from a type perspective.