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
26package 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   1.1
40 */
41public 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}
82