1. /*

  2.  * @(#)InvalidClassException.java	1.20 03/12/19

  3.  *

  4.  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package java.io;

  9. 

  10. /**

  11.  * Thrown when the Serialization runtime detects one of the following

  12.  * problems with a Class.

  13.  * <UL>

  14.  * <LI> The serial version of the class does not match that of the class

  15.  *      descriptor read from the stream

  16.  * <LI> The class contains unknown datatypes

  17.  * <LI> The class does not have an accessible no-arg constructor

  18.  * </UL>

  19.  *

  20.  * @author  unascribed

  21.  * @version 1.20, 12/19/03

  22.  * @since   JDK1.1

  23.  */

  24. public class InvalidClassException extends ObjectStreamException {

  25.     /**

  26.      * Name of the invalid class.

  27.      *

  28.      * @serial Name of the invalid class.

  29.      */

  30.     public String classname;

  31. 

  32.     /**

  33.      * Report a InvalidClassException for the reason specified.

  34.      *

  35.      * @param reason  String describing the reason for the exception.

  36.      */

  37.     public InvalidClassException(String reason) {

  38. 	super(reason);

  39.     }

  40. 

  41.     /**

  42.      * Constructs an InvalidClassException object.

  43.      *

  44.      * @param cname   a String naming the invalid class.

  45.      * @param reason  a String describing the reason for the exception.

  46.      */

  47.     public InvalidClassException(String cname, String reason) {

  48. 	super(reason);

  49. 	classname = cname;

  50.     }

  51. 

  52.     /**

  53.      * Produce the message and include the classname, if present.

  54.      */

  55.     public String getMessage() {

  56. 	if (classname == null)

  57. 	    return super.getMessage();

  58. 	else

  59. 	    return classname + "; " + super.getMessage();

  60.     }

  61. }