/*

 * Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package java.io;

/**

 * Thrown when the Serialization runtime detects one of the following

 * problems with a Class.

 * <UL>

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

 *      descriptor read from the stream

 * <LI> The class contains unknown datatypes

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

 * </UL>

 *

 * @author  unascribed

 * @since   1.1

 */

public class InvalidClassException extends ObjectStreamException {

    @java.io.Serial

    private static final long serialVersionUID = -4333316296251054416L;

    /**

     * Name of the invalid class.

     *

     * @serial Name of the invalid class.

     */

    public String classname;

    /**

     * Report an InvalidClassException for the reason specified.

     *

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

     */

    public InvalidClassException(String reason) {

        super(reason);

    }

    /**

     * Constructs an InvalidClassException object.

     *

     * @param cname   a String naming the invalid class.

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

     */

    public InvalidClassException(String cname, String reason) {

        super(reason);

        classname = cname;

    }

    /**

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

     */

    public String getMessage() {

        if (classname == null)

            return super.getMessage();

        else

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

    }

}