package com.zetcode; import java.util.ArrayList; import java.util.List; public class NumbersEx { public static void main(String[] args) { List ls = new ArrayList<>(); ls.add(1342341); ls.add(new Float(34.56)); ls.add(235.242); ls.add(new Byte("102")); ls.add(new Short("1245")); for (Number n : ls) { System.out.println(n.getClass()); System.out.println(n); } } }