nonserialsuperexample.java

jdk 6.0的api文档．．．很难找到哦

/*
 * 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 
 * ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE 
 * FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, 
 * SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER 
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF 
 * THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *  
 * You acknowledge that Software is not designed, licensed or 
 * intended for use in the design, construction, operation or 
 * maintenance of any nuclear facility. 
 */

import java.io.*;

/** This example shows how to serialize a subclass whose superclass is not
 * serializable.

 * When a superclass of a particular is not serializable, the subclass is
 * responsible for saving the state of its supertype (in its writeObject)
 *
 * Compiled and Tested on JDK1.1 & JDK1.2
 *
 * How to run this example:
 *                         Compile this file: javac NonSerialSuperExample.java
 *                         Then run:          java NonSerialSuperExample
 *
 * This will print out a book object before and after serialization.
 */
public class NonSerialSuperExample {

    /**
     * Creates a book object, serializes it, deserializes it and then prints 
     * out to test that the serialization did work.
     */
    public static void main(String args[]) {

	// create a Book object 
	Book bookorg = new Book(100, "How to Serialize", true, "R.R", "Serialization", 1997);
	Book booknew = null;
	
	// serialize the Book
	try {
	    FileOutputStream fo = new FileOutputStream("tmp");
	    ObjectOutputStream so = new ObjectOutputStream(fo);
	    so.writeObject(bookorg);
	    so.flush();
	} catch (Exception e) {
	    System.out.println(e);
	    System.exit(1);
	}
	
	// deserialize the Book
	try {
	    FileInputStream fi = new FileInputStream("tmp");
	    ObjectInputStream si = new ObjectInputStream(fi);  
	    booknew = (Book) si.readObject();
	}catch (Exception e) {
	    System.out.println(e);
	    System.exit(1);
	}
	
    // The books should be the same if we did everything correctly!
	System.out.println();
	System.out.println("Printing original book...");
	System.out.println(bookorg);
	System.out.println("Printing new book... ");
	System.out.println(booknew);
	System.out.println("The original and new should be the same!");
	System.out.println();
    }  
}