import java.util.ArrayList;import java.util.Date;import java.util.HashSet;import java.util.List;import java.util.Set;public class Main { public static void main(String[] args) { Set set = new HashSet(); set.add("A"); set.add(new Long(10)); set.add(new Date()); List list = new ArrayList(set); for (int i = 0; i < list.size(); i++) { Object o = list.get(i); System.out.println("Object = " + o); } }}