package Collection_List; import java.util.*; public class collection_list { public static void main(String[]args){ List<String> list=new ArrayList<>(); list.add("a"); list.add("b"); list.add("c"); list.add("d"); list.add(3,"Alex"); System.out.println(list.get(3)); System.out.println(list.remove(2)); System.out.println(list.set(1,"Jeff")); System.out.println(list.toString()); } }