practice-java-polymorhism.rar_practice

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package com.polymorphism; /** * * @author farid */ public class BoxDemo { public static void main(String[] args) { Box x; Box b1 = new Box (); WoddenBox wb = new WoddenBox(); SteelBox s1 = new SteelBox(); LargeWoddenBox p1 = new LargeWoddenBox(); b1.info(); wb.info(); s1.info(); p1.info(); } }