/* * @(#)ReadingMaterial.java 1.1 97/12/12 * * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved. * * This software is the confidential and proprietary information of Sun * Microsystems, Inc. ("Confidential Information"). You shall not * disclose such Confidential Information and shall use it only in * accordance with the terms of the license agreement you entered into * with Sun. * * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING * THIS SOFTWARE OR ITS DERIVATIVES. * */ import java.io.*; // The superclass DOES NOT implement serializable class ReadingMaterial { /** * We do not make these private because we need the subclass Book to be * able to save the state of this superclass. * Alternatively, we could make these private and create set and get * functions that would allow access to the Book subclass. * If we failed to do that with private fields, then fields would not * be saveable! */ protected String author; protected String subject; protected int yearwritten; // other relevant data and methods // . // . // . /* * a mandatory public no-arg constructor... will be used to reconstruct * this non-serializable class. */ public ReadingMaterial() {} ReadingMaterial(String auth, String sub, int year) { author = auth; subject = sub; yearwritten = year; } }