package Generics_package3; import java.util.ArrayList; public class Generics_demo3 { public static void main(String[] args) { ArrayList list1 = new ArrayList<>(); ListUtil.addAll(list1, "aaa", "bbb", "ccc"); System.out.println(list1); ArrayList list2 = new ArrayList<>(); ListUtil.addAll(list2, 1, 22, 34, 56); System.out.println(list2); } }