/*
 * Copyright 2002 Sun Microsystems, Inc. All  Rights Reserved.
 *  
 * Redistribution and use in source and binary forms, with or 
 * without modification, are permitted provided that the following 
 * conditions are met:
 * 
 * -Redistributions of source code must retain the above copyright  
 *  notice, this list of conditions and the following disclaimer.
 * 
 * -Redistribution in binary form must reproduce the above copyright 
 *  notice, this list of conditions and the following disclaimer in 
 *  the documentation and/or other materials provided with the 
 *  distribution.
 *  
 * Neither the name of Sun Microsystems, Inc. or the names of 
 * contributors may be used to endorse or promote products derived 
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any 
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY 
 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY 
 * DAMAGES OR LIABILITIES  SUFFERED BY LICENSEE AS A RESULT OF OR 
 * RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR 
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 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF 
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 *  
 * You acknowledge that Software is not designed, licensed or 
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 */

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;
    }
}