Parent.java |
/* * Parent.java * * Created on December 3, 2002 */ package collections.getclass; /** * Base class using instanceof instead of getClass. * @author Thomas Rowland */ public class Parent { private static int id = 1; public Parent() { System.out.println(toString()); } /** * Overridden equals method using instanceof * instead of getClass causes problems when * comparing with derived classes. */ public boolean equals(Object o) { //if (o.getClass() == this.getClass()) if (o instanceof Parent) return (((Parent) o).getId() == this.id); return false; } public String toString() { return "I am a Parent"; } public int getId() { return this.id; } }