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    1   /*
    2    * Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package java.io;
   27   
   28   /**
   29    * Thrown when the Serialization runtime detects one of the following
   30    * problems with a Class.
   31    * <UL>
   32    * <LI> The serial version of the class does not match that of the class
   33    *      descriptor read from the stream
   34    * <LI> The class contains unknown datatypes
   35    * <LI> The class does not have an accessible no-arg constructor
   36    * </UL>
   37    *
   38    * @author  unascribed
   39    * @since   JDK1.1
   40    */
   41   public class InvalidClassException extends ObjectStreamException {
   42   
   43       private static final long serialVersionUID = -4333316296251054416L;
   44   
   45       /**
   46        * Name of the invalid class.
   47        *
   48        * @serial Name of the invalid class.
   49        */
   50       public String classname;
   51   
   52       /**
   53        * Report an InvalidClassException for the reason specified.
   54        *
   55        * @param reason  String describing the reason for the exception.
   56        */
   57       public InvalidClassException(String reason) {
   58           super(reason);
   59       }
   60   
   61       /**
   62        * Constructs an InvalidClassException object.
   63        *
   64        * @param cname   a String naming the invalid class.
   65        * @param reason  a String describing the reason for the exception.
   66        */
   67       public InvalidClassException(String cname, String reason) {
   68           super(reason);
   69           classname = cname;
   70       }
   71   
   72       /**
   73        * Produce the message and include the classname, if present.
   74        */
   75       public String getMessage() {
   76           if (classname == null)
   77               return super.getMessage();
   78           else
   79               return classname + "; " + super.getMessage();
   80       }
   81   }

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